Building A Brand New Blow Thru Carburetor For The Turbo C3 Corvette
Vložit
- čas přidán 19. 04. 2023
- Building a brand new blow thru carb using a Proform 650cfm. Would 10/10 recommend this carb for a budget blow thru carb.
Tags : #Turbo #c3 #corvette #sbc #Chevy #350 #305 #327 #383 #400 #402 #turbocharged #compcam #proform #carburetor #blowthrough #blowthru #smallblock #smallblockchevy #garagebuilt #oneofakind #boosted #boost #speedmaster
I am approaching my first blow thru project...this info is helpful thanks
Nice video. I have a set of weber dcoe side drafts i was thinking of using, and thought about blow through. Then yoir video came up. I think its a sign for me to keep pushing forward. Never done one before
That is by far the sexiest carburetor I have ever seen in my life 😍 huge fan of purple 💜
Same one I use and I love it
Nice. Hopefully that carb will do good, I'm sure it's going to. Ready to see it making some pulls!
So far so good! I ordered the wrong windage tray so once I get it in I’m going to really see what it has in it. I’ve never really made a full pull because of the oil pressure.
I have learnt so much from you all ready this video was fucking sick man
Very cool video. I would have gone with the E85 version of that carb because it doesn't have any vacuum ports that you'll have to plug. That way the carb stays sealed underboost and if you need a fitting for the brake booster you can run it off of the intake instead. The Tunning on the E85 version is a little more rich but it can be turned down but I'd rather be rich than lean anyway lol
Brake boosters on a carbed turbo car with a choppy cam.. You’ll need a check valve, and depending where the boost kicks in, it might struggle to maintain enough vacuum for the servo. You can always fit an electric pump though.
Car sounds good 👍👍
Thanks!
I am to building a turbo 393w and I’ve very interested in the blow-through setup as I will be going that route
Just watched a video by brawler347-5.0 on you-tube and he did same thing to the base plate he drilled out the power valve protector and left it open, thanks for the correction
I'm new here, I like the way he's just stomping out the poor inner fender lmao
I was installing an ac box delete 😂
@@JJsSpeedShop 420th subscriber 😎
You got the part number on that carb I’m trying tot do the same thing
Cool small world. I think you are the guy that answered my question on Amazon asking about hood clearance. I ended up going with another header that hangs it lower. Thanks so much for the help and videos. I have to ask about 50cc accelerator pumps do i have to have them for a 350 lt1 daily driver in your opinion?
I wouldn’t think they were necessary. I’m not running them.
If you run a vacuum operated powervalve you leave it open if you run a boost regulated power valve you block off the base plate hole. Some people have reported that you don't have to drill out a power valve check ball and that when left as they've said that they never had one close up.
That’s some good info! Thank you!
Nice Job Man!! So it as it came jetting, pvcr's, idle air bleeds, Power valve in front etc. with the exception of taking the check ball out of the baseplate? What's the max boost you run or plan to run?
So I run 11lbs max boost and I did drill the pcvr out today with a 5/64 drill bit and it seems perfect. I pulled a plug and seems with my setup it’s good. I do need to get a wideband to fine tune it still. But as a street car it seems pretty dialed. On the way to work this morning without the pcvr’s drilled out I can definitely tell it was running lean under boost.
It stands for power valve restriction. Basically a vacuum controlled jet
The pvr plus the main primary jet usually equals the flow of the rear main jet. It just applies fuel progressively according to load and vacuum
They both add fuel thru the booster
Will the 750 work the same ?
why not install boost ref power valves while you're in the carb? i followed titan1500s blow thru carb build and he did boost reference power valves also you need to build vent tube extensions that face the same direction as your carb hat opening it can make a major difference.
Ok so as far as a brpv it may help, but I’m also low boost compared to others. I was trying to go completely budget, also I was just copying the Holley demon specs. If you go on summits website they list every single spec of their carbs and the blow thru carbs all have 4.5 power valves in them. As far as vent tube extensions, I tried a set in my last carb and it did a bunch of weird things. I’ll probably try another set later down the road I just don’t like changing too many things at once because if it runs weird I don’t know exactly what made it do it. So I like doing things in small steps personally. Thanks for watching the videos and subscribing! I do appreciate it!
Don’t need vent tube extensions…Just use a carb hat spacer so the air goes down in a straight forward formation
You said 575 for the pro form? Did the CSUs go up over a 1000? Dang. Damn inflation. I wonder if I could convert my summit carb? I’ve got two so maybe I’ll try
I’ve never called them directly but on Facebook forums I seen them going for $1300+
If you don't mind me asking what ignition system setup are you using
Just an hei with msd 6al
Is it programmable to pull timing under boost?
Are you also using a boost reference fuel pressure regulator? Just curious
Yes I am
@@JJsSpeedShop , ok cool thanks, I appreciate your videos, I would like to know what kind of regulator you are using for your turbo vette and I think I’m give the pro form 750 with the annular boosters a try on my car , I probably won’t push it over 12 psi
I’m actually using a cheap $40 Amazon one I haven’t had any issues with it at all the pump I’m using is capable of 50 psi and the regulator regulates it down no problem. I also am running a return to help it. I’m using the same regulator on the 454 hearse.
I think your supposed to put glue or Apoxsee in the hole were you took the check ball out of
According to hanger 18 fabs instructions you leave it open
“Also, it is worth noting that some of the newer Holley carbs come with a
"Power Valve Protector", [pic] or check ball in the base plate to prevent backfires from rupturing the power valve's diaphragm. This must be removed if the power valve is to function correctly under boost. Simply drill the small retaining plate from the top of the base plate and remove the check ball and washer. [pic] All it takes is slight pressure from the drill to hook the retaining plate and it will come out easily. Be sure to remove all the parts of the power valve protector. You should have the retaining plate (stuck to the drill in the following picture), the check ball, and a small washer. [pic]”
www.hangar18fabrication.com/blowthru.html
I thought I had read or heard that somewhere too. Maybe you could try it and if it doesn't work you could just drill back out.
@@brandonwestfall8596 , I watched a video about the base plate and blow-through carbs and you do in fact leave the valve open after you remove the power valve protection from base plate.
@@brandonwestfall8596 . Also I think went you remove the power valve plug and put apoxy or glue back in the hole/valve in base plate is for a n/a deal or combo
Thanks for not saying nothing back
Not running right