This is coming in very handy. Im fixing to make this jump from efi to carb. Great job. An old video I know, but again, very informative. Thanks a million. Hopefully my swap will go smoothly.
I'm converting my 89 to carb. I needed to grind away some aluminum from between the third and fourth runners to clearance the exhaust manifold. I plan on using a HEI type distributor . I already rebuilt a 450 cfm Holley from a Ford 302. Glad to hear you improved fuel economy .
Sweet! I love this engine along with the AMC 4.0 in the jeeps. That's when 6 cylinder trucks sounded like trucks, unlike the ones of today that sound like race cars.
I dont know, my dads 2017 f150 with the 5.0 sounds nice, then agin my l6 sounds like a popping johnny at 50 rpms, or undor a load. Witch is best? I dont know.
I was convinced I was going to keep my EFI on my '89 until I saw your video. I'm not so sure now. Good show! She sounds great! Love to see more if you keep tuning!!
if you do this dont cheap out on parts it anit worth the time and pain of tuneing it, i have about 700$ in this set up if i had spent the 100$ more on a nicer carb it would be flawless
@@oldreliable303 That's just a holley thing from my experience, I've used an edelbrock before and they just run better out of the box, same with those summit carbs (but they're made of pot metal and I've broken one before). Holleys are a lot more finnicky but I like how they run better when they're dialed in pretty well. Especially if you have a smaller cube engine or it's a mild build. I've found that an edelbrock 600 cfm will make a smaller engine gutless while the same size holley with vaccum secondaries has a lot more low end and better part throttle response.
I think the rear PCV needs to be hooked up to some kind of vacuum under the carb. At least thats how its hooked up on stock ones with carbs so that blow by stuff can be pulled out of the valve cover area and doesnt gum stuff up
It still keeps the oil, sluge clean with just the breathers on top, but instead of the oil mess being inside of the intake, it makes a mess on the valve cover
I've got a spare 78 300 i6 with original carb I'm tempted to drop into a spare 87 F150 I've got, due to the original engine having a tap no one can run down. This video helped a lot with a few things I was pondering, fuel supply, ignition, etc.
Great job friend bless your heart for wanting to help us who have the 300 cid struggles with EFI my 95 runs great for 15 minutes then starts missing pulling my hair out ! New fuel pump plus all the usual stuff did notice a lot of air in fuel line I eliminated my rear tank a year ago capped off rear lines with compression fittings ran well now air bubbles new map sensor egr valve man I’m tempted to do what you did would like to have a little more wireing info any help would be great l love my truck thanks
Just picked up an old 84 Ford F150 300cu.in. 6 cylinder 4 speed for $500.00...the body is in great shape so I may be holding on to this one for a while. I do need a little carburetor work...so I may be asking you for a little help in the near future ! Great video...Thanks ! LIKED/SUBSCRIBED !
Screww Googlle thanks for the sub. and best of luck to you, i love these old ford, but 500 buck sounds like mine. itll need a lot of love, and give you alot of headaces. but youll have fun and and enjoy it.
This video was very helpful I've got 89' F150 300 inline I'm wanting to swap from efi to carb one my favorite Ford engines being I'm a Ford man lol thanks
MAN! that's a lot of effort and a dang good one, i could never attempt that, i like watching (u lost me on 2 months of wiring) buildups of 300's I have an 81 that I put a 300 out of a late 60s, i need to change the oil pan and pump, the 60s has sump in front because of straight axle, and the carb dosnt have kick down leankage, I'm getting it there, Thanks for the video, you are a smart guy,....(GET A CLUB STEERING WHEEL LOCK!!)
I have a 81 that's burning a lot of oil and knocking. I just picked up a 94 efi complete block and head. My plan is to swap all my carb manifolds and accessories onto it.
Thanks for the response. I guess I am learning as I go. From the little research I've done, there has been a couple that has used 500 cfm, guess I thought 600 was a little much, but coming from someone who has done this, that helps.
Edelbrock 1405 carb , offenhauser square bore intake , split tri Y header , 240 inline head with mild port and bowl work, comp 268 h cam, duraspark 2 conversion tall rotor, adapt a cap and brass terminal cap, recurved distributor and msd 6al box and the 300 6 will make all the hp and trq a regular joes pickup will ever need and then some.
Grant Smith yes, the regulater is holley bp 12-803 it is realy over kill for this but is faily cheap, and it being a by pass regulater it keeps you from boiling your fuel, over presserizeing your fuel sistom, it is used manely it act in place of the retrun line from the carb. because most carbs do not have a retrun line from them, this line nominaly comes from the mechainley fuel pump.
Having played with Ford 300 I6's back in the day, for everyday driving, your best bet is to stay close to stock but, get the HD engine if you can. The power is only a bit better than the regular but, it is built much stronger. If you can't get one, the regular 300 is fine. Find some late 1970's heads because they have higher compression. Don't waste your money and time with headers. Ideally, get the HD exhaust manifold. Otherwise, just stick with the regular production exh manifold. You must have heat under the intake regardless. Otherwise, it will never run right because of fuel condensation along the walls. The HD engines got the Carter YF carb, which had a bigger venturi than the YFA. Make sure there is NO SLOP in the carb linkages. A lot of performance is lost because of loose linkages. The dump truck / school bus 300's gave the best net HP number of 126hp. With the higher compression head, it felt like another 10hp at least. It wasn't the fastest 300 but, it was eager to rev and had great throttle response because it had the hot spot under the intake, like carbureted inline sixes should have.
@@beunbad Mainly school buses and small dump trucks. I remember them being standard equipment in the trucks over 6000 GVW. That meant F-350 and heavier. I think it was optional for the F-250 but, I'm not sure. The 300 HD was popular with fleet buyers who just wanted the lowest prices possible for X number of trucks. Bottom line is that many probably haven't survived due to the nature of the vehicles they worked in. They were worked hard and sold off after seven years depreciation.
thankyou so much for sharing, i have a 91 ford f350 4by4 deisel. i want to put a 89 300 six in it, now i know i can use all the parts off an older six from the 70s. i want a carburater instead of all the crap. i want it old school. would i be able to put a distributor that has points in it?? im just not that good at wiring up electronic ignition. id like to look under the hood and it would look like something from the 60s
Hello Russell I know your post is old like 2 years old but you said your truck was diesel so was it 7.3 or 6.9 idi iam looking for parts or the whole motor I have a 91 f350 with a 7.3idi but I also have a 1991 f150 with a 4.9 300 6 cylinder that doesn't run I think the computer is bad because I dont have any spark, the fuel pumps dont kick on when I try to start it I haven't tried to shot either in it go start it will do that
The EGR efi stuff if intimidating.. I found a 96 rwd shortbed for $1500 100k miles do I buy buy it 😅 it's only showing O2 sensor code because someone cut off the cat
The newer blocks have boss and taped holes, but where the arm goes though for the pump you need to cut a hole. Witch is not hard but you will need to drop the pan to clean shavings.
I'm in the process of changing a 92 model EFI inline 6 300 to run carbureted very similar to yours but I'm putting it in a 2000 F250 extended cab and be hooked up to a np435 manual transmission with Granny low Thumbs Up On You video it's giving me a lot of pointers that I couldn't understand the lingo off of the forms. Maybe you can shoot me an email and we could exchange pictures for something maybe?
Numa Newbern yes, but for that much money, i could have fixed the stock efi. then got a aftore market ecu. the carb just needs a tune two times a year, thats just a few mins to do that. i dont think a bolt on efi kit would get me any more power, or better mpgs. just my 2 cents, your milage may very.
My point was since you went to the expense of the 4 barrel intake, you could of had up to date technology of the new EFI without all the plumbing and issues of the original, these new kits you can use a frame mount EXTERNAL fuel pump, anyway GREAT job with your change,
Do you think the cam you have has helped power and MPG over the stock EFI cam? My plan is , is to use the GM HEI distributor and do away with any of the Ford box. Even before this was common I've cut the tops out of GM distributors and machined it to the engine I needed it for. One hot wire for ignition and you're racing. I also wanna try to adapt the EFI plenum to take the carburetor over having to buy the offenhauser setup. I have 2 of these with M-5 transmissions with 4x4 transfer cases. I now wanna put one in an 87 GM Silvarodo. Personally I love the 4.9 5 speed 4x4. But luv the 87 square GM 4x4 Silvarodo truck better than the F- series. Thanks for your reply. Any ideas on using the long tubes of the EFI intake I'm listening. My Silvarodo is too clean and nice to cut a hole thru the hood for the carburetor n air filter to stick thru. , But those long runners should make the gas fully atomized before getting into combustion chamber. A preacher friend of mine was racing in the late 50's - 70's and made his own intake manifolds. He would get the carburetor as far away as possible and make runners from it to the head ports. He won lots of races by simply making his intake runners as long as possible.
Will any carborated manifold made for this engine fit? I have efi as well and want to put a four barrel on it and see different manifolds on summit racing and jegs. Do the carborated manifolds bolt up same as efi?
Hey men good video 👍 I have a 1991 for f150 Iline 6 That I wanna do the same project but I don’t know what parts do i need will you help me with that?? Thanks and have a nice day
Any tips on the wiring have the same truck. Bought the Carter fuel pump and offenhauser intake. Just need help with the wiring. Any tips will help, thanks
I would truly love your help to change my 93 over so anything’s you could write down for me would be so helpful all part numbers and anything else you could let me know
At 6:58 you just tied into the original fuel lines ? One acts as a return ? From the tie in at that point is everything the same all the way back to the tank ??
Just started on SAME project a 94 with 5 speed, at 4:44 HOW do you remove & unplug ?? Looks like ONLY 2 wires used from the plug ??? Which 2 or how many did you keep ??
At 11:22 I need a wiring setup JUST like that, the one I bought the key switch was destroyed also, man a wiring diagram of WHICH wires you un to that switch & where they go would help me, BETTER yet, I'd pay you to make me one like that ? I could PRE pay you ! I left my email in your note section on your page.
So I got my truck running an I messed with the timing a little bit I had it perfect thr first time but running lean made me think it was the timing but I noticed any little time past base really hurts this 300 in starting, power any thing if it's not dead on it will crank forever.
Yeah I wanted to get a duraspark but everything near me is just picked out or fucked. I'm learning very quickly that hei distributors do not like lean mixtures at all at about 2000 rpm it leans out an starts vibrating Luke it had a Jake brake but if you let off it stops an returns to about 13.5-14.5. But when it starts doing that shit it jumps to like 16.5
@@oldreliable303 that's what I figured but the regulator o got is a BP the one like you have an after my engine warms up I noticed that the fuel pressure starts to drop till about 2 psi the engine still runs fine then but could thatbe my problem also ?
Awesome, I’m about to do the exact same thing to my 93. I follow what you did for everything, and is in line with what I’m planning. The only thing I need to wrap my head around is the ignition changes. Do you mind sharing a little bit about what you had to modify?
Wondering if you tried or thought about mounting the carb rotated 90 degrees (primaries towards passenger side fender well). I was told I had to do this as it provides better fuel distribution, particularly at slower speeds (running only on primaries). Otherwise front 3 cylinders could get more fuel than rear 3. However, I have throttle cable challenges because of it and would prefer to set mine up like you did. Any thoughts on carb mount position? Any lean condition on the rear cylinders? My Offy is a dual plane, not sure if that makes the difference.
The offy dp like you have is made for that setup, my is the offy c on witch i can only mount the carb the way i have it. Have had both i dont think the mounting rotateson makes much diffen.
Phil Lowman i found that tractor in a junk yard, i dont know what model it was. just look for a industrial engine of some kind there were rv type cams in these. the one i have (had, i swaped in a comp 252h) has the same lift but more durasontion than a stock truck cam
Just bought a 94, NOT running and considering this setup, the wiring is spooking me & all the fuel lines, what state are you in, IF FLORIDA I'd pay you to walk me through this conversion
I'm in a position where I have to do as you have are you still willing to share advice? My main concern is wiring ,I have same model truck. Cannot find wire causing me to have a miss at part throttle every thing imaginable has been replaced in engine management system
Anne DiMassa if you have replaced all of that you have alot of money put into it, maby a new wireing harness is a better route. as far as back dating to carb just copy the wireing of a pre 83 f150 with the 300 l6, plus a fuel pump.
I'm thinking about putting a late 90s 4.9 in my 83 with a 4.9 carbureted. What snags am I going to run into putting that newer block in and bolting up the old carburetor and exhaust?
Trying not to kill the gages, lights radio... and tying my wiring in to the factory harness. Plus i was clueless of how to wire anything, i was only 16 when i did this.
Thanks for this. I put an EFI engine in my 81 F100 with the same set up as you have except I have a Quick Fuel 450 cfm carb. I'm having trouble tuning it too. I have to set the timing at 2500 rpm retarded until it runs smooth. Did you get yours to idle smoothly? I just ran across the shrouded valve thing. Mine has an intermittent miss at idle only. It does haul ass now and gets 17 mpg. I just wish I could get the idle set right. Thanks again for sharing this.
OMG. Do not listen to the author of this video. You don’t idle because your carb is to freaking big. Google how to check CFM of an engine and do the math. Proper fuel air ratio is key ! Cubic inches times max rpm your engine will turn devided by 3456 equals CFM of your engine. You only need a 350 cfm carb
Hola buenas noches pudieran ayudarme Tengo una 4.9 Modelo 95 IVA andando y de repente se apagó Able al mecánico no encontró la falla y yo me percate que entraba corriente al distribuidor pero no salía y mire que estábs mal el rotor Sele cambie y jalo pero estaba toda dispareja sin potencia y hechando contra explociones lo intente poner a tiempo pero no le veo marcas al siguenal solo una ralla en la parte de atrás pero ni así arranca ya Ya lo puse a punto muerto superior y nada alguien pudiera ayudarme por favor es que estoy en un rancho y no hay mecánicos serca y cobran una fortuna gracias saludos
Some one please tell me if i'm wrong but i think the pre efi carb and exhaust manifolds will bolt up to efi 4.9. They can be found at junk yards for much cheaper that the Ofenhauser manifolds($400) and also use OEM one barrel. I know the aftermarket manifold and 4 barrel if more powerful but if you are into performance you would have a v8.
blastforyou yes they will bolt on, but some years have diffent fanges (where the bolts clamp the intake and exosht manfolds to the head) some are thiner, or thicker here, so you cant always mix and match these without grinding one to match the other.
Yes, keep in mind the EFI block will not have a fuel pump provision though. The pre EFI head is a better flowing head too. Leave that single barrel in the junk yard its where it belongs. Hunt around you will find a good offy for cheap used, or even possible broken if someone over tightened the mounting bolts its not a hard repair. Having spent way to many hours messing with a single setup, and eventually trying a "rebuilt" carb to no luck i tossed it all for the offy and will never recommend stock to anyone. My setup is a 2wd 96' F150 Regular cab long box, M5OD, with 2.73's Yes 2.73's and 235/75/15's Engine is a 85' with Offy dual, holley 390, DUI ignition. Wide open its a raped ape in comparison to the EFI. The Holley is a pain in the ass and will be a Edelbrock soon enough, the guy wouldn't split the intake and carb when i bought them. Why they optioned this truck with 2.73's i have no idea but i can do city speeds in first no problem.
@@Crash5291 for a really Good and reliable four barrel carb. Why not consider a Ford mtorcraft carburetor? Should be a pretty good match up for the 300 inline cfm wise...
I have a 70 so it has mechanical fuel pump I believe my gas tank is probably rusted out. what fuel pump do I need to look for in order to run 450 to 600 cfm carb??
Isaiah N a highflow mechanical with a return line, or just the stock one will do. the engine aint taking anymore fuel, you just now have 2 float boals.
@@oldreliable303 that's a good question. the other account is just for posting robotics stuff but college has gotten in the way of posting any content.
you need the duraspark 2 distributor as well then just use a wiring diegram that you can find in a ciffords book for the duraspark 2. you will end up useing only the 2 signal wires and power, ground wires from the tfi, you need all of the duraspark 2 or tfi, not half and half
dude, that thing is smooth as silk.. glad to hear things are doing much better now!
This is coming in very handy. Im fixing to make this jump from efi to carb. Great job. An old video I know, but again, very informative. Thanks a million. Hopefully my swap will go smoothly.
I'm converting my 89 to carb. I needed to grind away some aluminum from between the third and fourth runners to clearance the exhaust manifold. I plan on using a HEI type distributor . I already rebuilt a 450 cfm Holley from a Ford 302. Glad to hear you improved fuel economy .
Sweet! I love this engine along with the AMC 4.0 in the jeeps. That's when 6 cylinder trucks sounded like trucks, unlike the ones of today that sound like race cars.
I dont know, my dads 2017 f150 with the 5.0 sounds nice, then agin my l6 sounds like a popping johnny at 50 rpms, or undor a load. Witch is best? I dont know.
I got an 89 F-150. I'm doing this. Thanks for the walk-thru.
Man your a brillant mechanic this is just amazing
I was convinced I was going to keep my EFI on my '89 until I saw your video. I'm not so sure now. Good show! She sounds great! Love to see more if you keep tuning!!
if you do this dont cheap out on parts it anit worth the time and pain of tuneing it, i have about 700$ in this set up if i had spent the 100$ more on a nicer carb it would be flawless
@@oldreliable303 That's just a holley thing from my experience, I've used an edelbrock before and they just run better out of the box, same with those summit carbs (but they're made of pot metal and I've broken one before). Holleys are a lot more finnicky but I like how they run better when they're dialed in pretty well. Especially if you have a smaller cube engine or it's a mild build. I've found that an edelbrock 600 cfm will make a smaller engine gutless while the same size holley with vaccum secondaries has a lot more low end and better part throttle response.
tnx for the video. Im looking to rebuild a 300 six and put in my 62 F100. Knowing how easy it is to change efi to carb just made it alot easier
The inline six is my favorite engine. So easy to work on.
so glad I stumbled upon this. ready to ditch the 1 barrel carb on mine and upgrade from the points distributor. thanks for posting
Nice truck, the engine is awesome.
dude u did an awesome job. great work
Matt Brian thanks
This guy is a good mechanic.
Thank you for taking the time to make this video I'm doing essentially the same thing
nice one, i'm researching EFI conversion for my Ford Capri MK1 3L ... i like the vid! Ace from South Africa
I always wondered about taking an EFI lower intake and building to accommodate six single barrells
Its been done
That was a smart idea running the regulator and return job. I wouldnt have thought of that.
Return is better anyways, as it prevents fuel trim changes as a deadhead system heat soaks.
Your truck sounds great. EFI is Ok, but I think you made the right call ditching it.
Rick Saffery yea, it sounds like a popping johnny. (old 2 cylinder john deer) even more so when im lugging it undoor load.
Thank you for the information!!
Edit-I commented before you started it..it sounds great!!!
I think the rear PCV needs to be hooked up to some kind of vacuum under the carb. At least thats how its hooked up on stock ones with carbs so that blow by stuff can be pulled out of the valve cover area and doesnt gum stuff up
It still keeps the oil, sluge clean with just the breathers on top, but instead of the oil mess being inside of the intake, it makes a mess on the valve cover
Summit racing wants $700 for the intake these days. you could by 6 carburetors cheaper.
I've got a spare 78 300 i6 with original carb I'm tempted to drop into a spare 87 F150 I've got, due to the original engine having a tap no one can run down. This video helped a lot with a few things I was pondering, fuel supply, ignition, etc.
Call me at 706 973 7381, if you have any questens, and watch my update/ revisons video.
Finally found a motor for $700 complete with accessories but it's efi out of 94 going in my 88 thanks to this video!
I just found a '68 complete running engine for $200. Even the points were good. It's going into a galaxie 500.
Awesome vid! Thanks for sharing. You did a great job.
Great job! I'm getting ready to get rid of EFI my 91 300. I'll be asking you much. Thanks for info
Your wecome, let me know how your project works out.
@@oldreliable303 *You're*
Great job friend bless your heart for wanting to help us who have the 300 cid struggles with EFI my 95 runs great for 15 minutes then starts missing pulling my hair out ! New fuel pump plus all the usual stuff did notice a lot of air in fuel line I eliminated my rear tank a year ago capped off rear lines with compression fittings ran well now air bubbles new map sensor egr valve man I’m tempted to do what you did would like to have a little more wireing info any help would be great l love my truck thanks
Nice job. Good video
Just picked up an old 84 Ford F150 300cu.in. 6 cylinder 4 speed for $500.00...the body is in great shape so I may be holding on to this one for a while. I do need a little carburetor work...so I may be asking you for a little help in the near future !
Great video...Thanks ! LIKED/SUBSCRIBED !
Screww Googlle thanks for the sub.
and best of luck to you, i love these old ford, but 500 buck sounds like mine. itll need a lot of love, and give you alot of headaces. but youll have fun and and enjoy it.
This video was very helpful I've got 89' F150 300 inline I'm wanting to swap from efi to carb one my favorite Ford engines being I'm a Ford man lol thanks
MAN! that's a lot of effort and a dang good one, i could never attempt that, i like watching (u lost me on 2 months of wiring) buildups of 300's I have an 81 that I put a 300 out of a late 60s, i need to change the oil pan and pump, the 60s has sump in front because of straight axle, and the carb dosnt have kick down leankage, I'm getting it there, Thanks for the video, you are a smart guy,....(GET A CLUB STEERING WHEEL LOCK!!)
Thank you. You gave me idea. My injectors are failing and I don't have the money but I have the parts
This guy knows what’s up
I have a 81 that's burning a lot of oil and knocking. I just picked up a 94 efi complete block and head. My plan is to swap all my carb manifolds and accessories onto it.
Put the tail pipe out the passenger side so you can fumigate the ditch for mosquitos as you drive. And when the smoke stops then it needs more oil.
Sounds good, quality truck, thanks for the video.
I'm impressed! You can fabricate.
nice work! any carb questions, feel free to ask!
ThunderHead289 will do
3 years later i have many questions.
Mosty with timing or fine tuneing the carb.
Thanks for the response. I guess I am learning as I go. From the little research I've done, there has been a couple that has used 500 cfm, guess I thought 600 was a little much, but coming from someone who has done this, that helps.
I notice it seems to run pretty clean
Wade hampton it does, but it could not pass a smog test do to being allowed to back date to carb by law
Tractor cam.. Ive never heard of that. That's radical.
Edelbrock 1405 carb , offenhauser square bore intake , split tri Y header , 240 inline head with mild port and bowl work, comp 268 h cam, duraspark 2 conversion tall rotor, adapt a cap and brass terminal cap, recurved distributor and msd 6al box and the 300 6 will make all the hp and trq a regular joes pickup will ever need and then some.
two revisons, get a carter fuel pump not the sending pump from ford. and a 600 cfm holley works much better.
oldreliable303 Justin Scott you got a part number for that fuel pump
Grant Smith carter P 4070 you can find them for around 50 to 70 dollers.
oldreliable303 Justin Scott thanks and you run that with your regulator
Grant Smith yes, the regulater is holley bp 12-803 it is realy over kill for this but is faily cheap, and it being a by pass regulater it keeps you from boiling your fuel, over presserizeing your fuel sistom, it is used manely it act in place of the retrun line from the carb. because most carbs do not have a retrun line from them, this line nominaly comes from the mechainley fuel pump.
Don’t listen. A 350 holly is all you need. Not enough cfm for a 4 barrel carb. The 350 Holley with a 260 comp cam will amaze you !
Having played with Ford 300 I6's back in the day, for everyday driving, your best bet is to stay close to stock but, get the HD engine if you can. The power is only a bit better than the regular but, it is built much stronger. If you can't get one, the regular 300 is fine.
Find some late 1970's heads because they have higher compression. Don't waste your money and time with headers. Ideally, get the HD exhaust manifold. Otherwise, just stick with the regular production exh manifold. You must have heat under the intake regardless. Otherwise, it will never run right because of fuel condensation along the walls.
The HD engines got the Carter YF carb, which had a bigger venturi than the YFA. Make sure there is NO SLOP in the carb linkages. A lot of performance is lost because of loose linkages. The dump truck / school bus 300's gave the best net HP number of 126hp. With the higher compression head, it felt like another 10hp at least. It wasn't the fastest 300 but, it was eager to rev and had great throttle response because it had the hot spot under the intake, like carbureted inline sixes should have.
What did the HD engines come in?
@@beunbad Mainly school buses and small dump trucks. I remember them being standard equipment in the trucks over 6000 GVW. That meant F-350 and heavier. I think it was optional for the F-250 but, I'm not sure. The 300 HD was popular with fleet buyers who just wanted the lowest prices possible for X number of trucks.
Bottom line is that many probably haven't survived due to the nature of the vehicles they worked in. They were worked hard and sold off after seven years depreciation.
Great video your a smart guy.
This actually answered a few questions I had on my 88 4.9
Maybe you have to check the fuel bowl the float make sure that the float is adjusted right and maybe it won't bog down
Thanks man, great video
Nice job!
Good information thanks 🙏🏻
The same troll master as on the ford forams?
Great job
Nice explaining.
Thanks for the video. Very helpful!
Thanks
good job !!
thankyou so much for sharing, i have a 91 ford f350 4by4 deisel. i want to put a 89 300 six in it, now i know i can use all the parts off an older six from the 70s. i want a carburater instead of all the crap. i want it old school. would i be able to put a distributor that has points in it?? im just not that good at wiring up electronic ignition. id like to look under the hood and it would look like something from the 60s
russell norton yes the duraspark 1 will fit and work, this truck spends a lot of time off road, and i diden want to be cleaning points all the time
thankyou justin. i just wasnt sure how to hook all that up, it had a deisel in it b4. so i wanted to keep the ignition wiring very simple.
Hello Russell I know your post is old like 2 years old but you said your truck was diesel so was it 7.3 or 6.9 idi iam looking for parts or the whole motor I have a 91 f350 with a 7.3idi but I also have a 1991 f150 with a 4.9 300 6 cylinder that doesn't run I think the computer is bad because I dont have any spark, the fuel pumps dont kick on when I try to start it I haven't tried to shot either in it go start it will do that
@@edwardkesock216 sorry but i think your a little late, im only seeing 3 years aftore my post.
The EGR efi stuff if intimidating.. I found a 96 rwd shortbed for $1500 100k miles do I buy buy it 😅 it's only showing O2 sensor code because someone cut off the cat
@@RobertDiesel-s2t go for it
Changing my 300 6 eft to a motor craft 2100 and I don't know what to do with the tfi or the distributor
The old blocks has a manual fule pump
The newer blocks have boss and taped holes, but where the arm goes though for the pump you need to cut a hole. Witch is not hard but you will need to drop the pan to clean shavings.
That's a cool intake you built
Mark Thomas yea, it was, but it failed for what i needed
I'm in the process of changing a 92 model EFI inline 6 300 to run carbureted very similar to yours but I'm putting it in a 2000 F250 extended cab and be hooked up to a np435 manual transmission with Granny low Thumbs Up On You video it's giving me a lot of pointers that I couldn't understand the lingo off of the forms. Maybe you can shoot me an email and we could exchange pictures for something maybe?
Justinds303@gmail.com
Since you went to the 4 barrel intake, I would get the Howell or the other EFI bolt on kits that bolt in place of the carb
Numa Newbern yes, but for that much money, i could have fixed the stock efi. then got a aftore market ecu.
the carb just needs a tune two times a year, thats just a few mins to do that.
i dont think a bolt on efi kit would get me any more power, or better mpgs.
just my 2 cents, your milage may very.
My point was since you went to the expense of the 4 barrel intake, you could of had up to date technology of the new EFI without all the plumbing and issues of the original, these new kits you can use a frame mount EXTERNAL fuel pump, anyway GREAT job with your change,
Where do you get an aftermarket ecu?
good job
Do you think the cam you have has helped power and MPG over the stock EFI cam? My plan is , is to use the GM HEI distributor and do away with any of the Ford box. Even before this was common I've cut the tops out of GM distributors and machined it to the engine I needed it for. One hot wire for ignition and you're racing. I also wanna try to adapt the EFI plenum to take the carburetor over having to buy the offenhauser setup. I have 2 of these with M-5 transmissions with 4x4 transfer cases. I now wanna put one in an 87 GM Silvarodo. Personally I love the 4.9 5 speed 4x4. But luv the 87 square GM 4x4 Silvarodo truck better than the F- series.
Thanks for your reply.
Any ideas on using the long tubes of the EFI intake I'm listening. My Silvarodo is too clean and nice to cut a hole thru the hood for the carburetor n air filter to stick thru. , But those long runners should make the gas fully atomized before getting into combustion chamber.
A preacher friend of mine was racing in the late 50's - 70's and made his own intake manifolds. He would get the carburetor as far away as possible and make runners from it to the head ports. He won lots of races by simply making his intake runners as long as possible.
What quadrajet did you have for it? I'm looking to swap the 300 from my 91 into a 1956 along with the 5 speed to replace the 250 in the 56
I dont know what year, i just know it was the 750 cfm verson.
Will any carborated manifold made for this engine fit? I have efi as well and want to put a four barrel on it and see different manifolds on summit racing and jegs. Do the carborated manifolds bolt up same as efi?
Yes any manifold for a 300 or 240 inline 6 will fit.
@@oldreliable303 thank you very much.
Hey men good video 👍
I have a 1991 for f150 Iline 6
That I wanna do the same project but
I don’t know what parts do i need will you help me with that?? Thanks and have a nice day
I can, do you have phone number?
Got an 88 and really considering doing this. Sick of EFI
Any tips on the wiring have the same truck. Bought the Carter fuel pump and offenhauser intake. Just need help with the wiring. Any tips will help, thanks
Got an 88 4.9 with EFI. This answered a lot of questions. I own a shop and I'm trying to offer new ideas out there. Things like kits. Interested?
I would truly love your help to change my 93 over so anything’s you could write down for me would be so helpful all part numbers and anything else you could let me know
Whats your phone number, or call me 706 973 7381, i dont white very well its easyer for me to tell you than to tipe it.
At 6:58 you just tied into the original fuel lines ? One acts as a return ? From the tie in at that point is everything the same all the way back to the tank ??
Just started on SAME project a 94 with 5 speed, at 4:44 HOW do you remove & unplug ?? Looks like ONLY 2 wires used from the plug ??? Which 2 or how many did you keep ??
At 11:22 I need a wiring setup JUST like that, the one I bought the key switch was destroyed also, man a wiring diagram of WHICH wires you un to that switch & where they go would help me, BETTER yet, I'd pay you to make me one like that ? I could PRE pay you ! I left my email in your note section on your page.
So I got my truck running an I messed with the timing a little bit I had it perfect thr first time but running lean made me think it was the timing but I noticed any little time past base really hurts this 300 in starting, power any thing if it's not dead on it will crank forever.
Then retard the timing when cranking, i think the white wire on the druspark 2 does this
Yeah I wanted to get a duraspark but everything near me is just picked out or fucked. I'm learning very quickly that hei distributors do not like lean mixtures at all at about 2000 rpm it leans out an starts vibrating Luke it had a Jake brake but if you let off it stops an returns to about 13.5-14.5. But when it starts doing that shit it jumps to like 16.5
@@aeo177 then tuneing the power vavle, and jets are needed
@@oldreliable303 that's what I figured but the regulator o got is a BP the one like you have an after my engine warms up I noticed that the fuel pressure starts to drop till about 2 psi the engine still runs fine then but could thatbe my problem also ?
@@oldreliable303 the pressure starts at about 6 psi cold an once the engine is warm it drops to 2 an my fuel is not boiling.
What you figure the cost to change over was?
Get rid of the tuning nightmare Holly. Carter/Edelbrock easy tuning. Or Quadrajet not to bad.
No
I need to know how to wired the hei for the 95 i went carb
Awesome, I’m about to do the exact same thing to my 93. I follow what you did for everything, and is in line with what I’m planning. The only thing I need to wrap my head around is the ignition changes. Do you mind sharing a little bit about what you had to modify?
What do you need to know? 706 973 7381
Nice work will be getting ahold of you soon i hope miss my inline should have never sold her
@@oldreliable303 might need to call you if I could also
@@shaggyrusso4348 sure, but its 4:30 am..
@@oldreliable303 sorry Im up all the time.. living in NY, didn't know your time frame.
Can you use a mechanical fuel pump on the newer blocks? I have an 89.
Yes you can the lobe is on the cam, and the boss is on the block, but you have to cut a hole in the block for the pump arm to pass though
Wondering if you tried or thought about mounting the carb rotated 90 degrees (primaries towards passenger side fender well). I was told I had to do this as it provides better fuel distribution, particularly at slower speeds (running only on primaries). Otherwise front 3 cylinders could get more fuel than rear 3. However, I have throttle cable challenges because of it and would prefer to set mine up like you did. Any thoughts on carb mount position? Any lean condition on the rear cylinders? My Offy is a dual plane, not sure if that makes the difference.
The offy dp like you have is made for that setup, my is the offy c on witch i can only mount the carb the way i have it.
Have had both i dont think the mounting rotateson makes much diffen.
@@oldreliable303 Thank you very much for the quick and helpful reply. I will just have to get more creative with my cable routing.
You said tractor cam? Where do I find one and what do I ask for? I assume this cam has much better power down low and that'll be great for best mpg.
Phil Lowman i found that tractor in a junk yard, i dont know what model it was.
just look for a industrial engine of some kind there were rv type cams in these.
the one i have (had, i swaped in a comp 252h) has the same lift but more durasontion than a stock truck cam
Just bought a 94, NOT running and considering this setup, the wiring is spooking me & all the fuel lines, what state are you in, IF FLORIDA I'd pay you to walk me through this conversion
North Ga.
Any chance you still have your old parts really need the injectors I can't find any that will work all the caps are to long
If you were about 6 years earlyer, then yes. But no there gone.
Is the cam the same from efi to carb engines?
Yes it is
I'm in a position where I have to do as you have are you still willing to share advice? My main concern is wiring ,I have same model truck. Cannot find wire causing me to have a miss at part throttle every thing imaginable has been replaced in engine management system
Anne DiMassa if you have replaced all of that you have alot of money put into it, maby a new wireing harness is a better route.
as far as back dating to carb just copy the wireing of a pre 83 f150 with the 300 l6, plus a fuel pump.
Pull a fuel pressure test. Sounds like the fuel pressure regulator may be failing. Also check iginiton timing.
Had a similar issue the distributor was my problem.
Hey bro wanted to ask you is there any way I can run my Carter yfa carburetor without any vacuum lines
Yes you can remove all vacum and cap off egr
I have a 93 300 6 what distributor an carb an intake an how will I hook it up to electronic ignition thank you.
I'm thinking about putting a late 90s 4.9 in my 83 with a 4.9 carbureted. What snags am I going to run into putting that newer block in and bolting up the old carburetor and exhaust?
Go on FTE and dive into the forums in the inline 6 section. Search for 4.9 efi to carb, to get started.
What's giving you so much trouble with the wiring? Seems like it'd just be a relay to the fuel pump and a relay to the ignition?
Trying not to kill the gages, lights radio... and tying my wiring in to the factory harness.
Plus i was clueless of how to wire anything, i was only 16 when i did this.
wondering if this setup would work with the c6 auto?
Yes it will work just fine
Thanks for this. I put an EFI engine in my 81 F100 with the same set up as you have except I have a Quick Fuel 450 cfm carb. I'm having trouble tuning it too. I have to set the timing at 2500 rpm retarded until it runs smooth. Did you get yours to idle smoothly? I just ran across the shrouded valve thing. Mine has an intermittent miss at idle only. It does haul ass now and gets 17 mpg. I just wish I could get the idle set right. Thanks again for sharing this.
Try colder spark pulgs, or mess with the timing.
I have always have had a hard time getting the efi head to idle with the carb...
OMG. Do not listen to the author of this video. You don’t idle because your carb is to freaking big. Google how to check CFM of an engine and do the math. Proper fuel air ratio is key !
Cubic inches times max rpm your engine will turn devided by 3456 equals CFM of your engine. You only need a 350 cfm carb
Hola buenas noches pudieran ayudarme
Tengo una 4.9
Modelo 95 IVA andando y de repente se apagó
Able al mecánico no encontró la falla y yo me percate que entraba corriente al distribuidor pero no salía y mire que estábs mal el rotor Sele cambie y jalo pero estaba toda dispareja sin potencia y hechando contra explociones lo intente poner a tiempo pero no le veo marcas al siguenal solo una ralla en la parte de atrás pero ni así arranca ya
Ya lo puse a punto muerto superior y nada alguien pudiera ayudarme por favor es que estoy en un rancho y no hay mecánicos serca y cobran una fortuna gracias saludos
Im getting 11 mpg with my EFI.
Then carb swap
I need that intake and a carb
Kenny Banks summit racing has them, but you aint getting mine. :)
Some one please tell me if i'm wrong but i think the pre efi carb and exhaust manifolds will bolt up to efi 4.9. They can be found at junk yards for much cheaper that the Ofenhauser manifolds($400) and also use OEM one barrel. I know the aftermarket manifold and 4 barrel if more powerful but if you are into performance you would have a v8.
blastforyou yes they will bolt on, but some years have diffent fanges (where the bolts clamp the intake and exosht manfolds to the head) some are thiner, or thicker here, so you cant always mix and match these without grinding one to match the other.
Yes, keep in mind the EFI block will not have a fuel pump provision though. The pre EFI head is a better flowing head too. Leave that single barrel in the junk yard its where it belongs. Hunt around you will find a good offy for cheap used, or even possible broken if someone over tightened the mounting bolts its not a hard repair. Having spent way to many hours messing with a single setup, and eventually trying a "rebuilt" carb to no luck i tossed it all for the offy and will never recommend stock to anyone.
My setup is a 2wd 96' F150 Regular cab long box, M5OD, with 2.73's Yes 2.73's and 235/75/15's Engine is a 85' with Offy dual, holley 390, DUI ignition. Wide open its a raped ape in comparison to the EFI. The Holley is a pain in the ass and will be a Edelbrock soon enough, the guy wouldn't split the intake and carb when i bought them. Why they optioned this truck with 2.73's i have no idea but i can do city speeds in first no problem.
@@Crash5291 for a really Good and reliable four barrel carb. Why not consider a Ford mtorcraft carburetor? Should be a pretty good match up for the 300 inline cfm wise...
I have a 70 so it has mechanical fuel pump I believe my gas tank is probably rusted out. what fuel pump do I need to look for in order to run 450 to 600 cfm carb??
Isaiah N a highflow mechanical with a return line, or just the stock one will do. the engine aint taking anymore fuel, you just now have 2 float boals.
+oldreliable303 Justin Scott where can I find one? thank you for replying
+Isaiah N I wasn't sure if stock one could support the 4 bbl carb, guess I can find out. staying mechanical pump would be easier/less work
Isaiah N i would try your loacle auto parts stores, they most likey have a high flow pump listed for it
I'm thinking about doing this to my 87' cause my injectors are shot, my fuel rail is rusted out, and my wiring is a complete mess
Is it a auto or stick shift?
Oops wrong account lol
@@TexasTopwaterllc good, that will work fine, if was a auto it would need a stand alone trans controler.
And why two (that know of) accounts?
@@oldreliable303 that's a good question. the other account is just for posting robotics stuff but college has gotten in the way of posting any content.
Das a mopower cawburratew? Sheems wike a wase a time? 🤪
Will edlebrock 600cfm carb work with this setup?
Yes
@@oldreliable303 thanks
What ignition module you use and how did you wire it?
Grant Smith duraspark 2, ran new wires using the old power sroers at the fuse box
oldreliable303 Justin Scott you use the wires from the efi ignition module?
Grant Smith no used a duraspark 2 module and cut out the tfi module
oldreliable303 Justin Scott I am running the Duraspark 2 module with the factory efi distibutor but but doesn't fire unless it's cranking.
you need the duraspark 2 distributor as well then just use a wiring diegram that you can find in a ciffords book for the duraspark 2. you will end up useing only the 2 signal wires and power, ground wires from the tfi, you need all of the duraspark 2 or tfi, not half and half
What kind of ignition are you using?
Is it compatible with a supercharger?
Duraspark 2, and yes it is