The Differences Between Edelbrock and Carter Carburetors
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- čas přidán 29. 08. 2024
- Ever wanted to know the differences between the Edelbrock and Carter Competition Series carburetors? Think you KNOW the differences? Today we’re going to put a few internet myths to rest as we look at three different carburetors side by side and give them a through inspection. Be prepared! We found some surprises! Long video, but a through review!
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Something you need to take into account is, those two Carter carbs you used for comparison came out at the same time Edelbrock had come out with their carbs.
The comparison would have been better with the original Carter comp series carbs. I ran two 500 cfm Carter Comp series carbs on a Mustang I had back in the late eighties. You can tell by the part number difference, the slotted screws (Edelbrock started the torx bit screws and then the Carters like yours had them as well). Even the little Comp Series name plate across the top affixed by the two top screws was different. They were attached using small rivets in the air horn on the Carters.
I have an old early eighties Carter catalog that lists all the info on the Comp Series as well as all the factory replacement carbs that I kept from a parts place I worked at that went out of business.
I hated the Edelbrock's when they came out at first, but I agree that Edelbrock gives out why more tuning info then Carter ever did. And tuning parts are a lot easier to get. Back in the day only folks that were good with carbs knew how to tune the Carter, which is why Holley's were always more popular.
That was a brutal float bowel volume comparison.
A few years back I pulled a Carter AFB competition series carburetor off a Chevy 350 engine in a junkyard. Looks like the carburetor was never taken apart from what I can see it did have the off-road kit for the carburetor float bowls already in place
Thank you for the info. I am picking up a rescue and it has a Carter carb on it. this makes it easier bringing my own gasket set.
I have 2 625 Caters that I bought around 1983. The one with a manual choke is a comp. The auto choke is not a comp. If I remember right the comp. came with different jets and rods, and I never got the gas mileage. I do know that I put the same rods and jets in it as the other one , but could not make the gas milage as the one with the auto choke. All I have are two Cater strip kits, that I have used on both Caters and all my 600 cfm Edelbrocks. Over the last 35 years I have benn using the Carter rebuild kits. THANKS FOR ALL OF YOUR videos.
Back a couple months ago when I was putting the idea of this video together, I looked to see if I could buy an old Carter strip kit. Not easy to find and very expensive! I know I had one in the late 80s. Guess it’s long gone. Thanks for watching!
Quadrajet brought back memories, had one on a 68 super sport Camaro that I bought in senatobia 1978 for 750.00 . 1981 drove it to California where I'm at now, it's sold now.
That’s a good memory! Not the sale but the trip across the country!
After seeing this video, I will do the same comparison. But between a 1406, and my '65 400hp 409's Carter carb. I do already know the bowl gaskets are the same.
I used to have a Carter Strip Kit back in the 80's that had all the needles & jets. And I do still have an old Carter catalogue
I assume the primary venturi size on the 625 is slightly wider to justify the extra 25cfm rating? 🤔
I’m unsure how Carter rated those or where they got the small amount of additional CFM. Something else I’d have to do a little more digging on. It’s a good question.
NO, more then likely the boosters were probably slimmer
@@MuscleCarSolutions Did you find out why the Carter is rated at 625? Thanks!
Great info!!! Hope all is well
All is well here! Had some rain blow though over the weekend so it’s a little cooler here. I know we’ll pay for that this week! Hope all is well with you sir!
The Rochester quadriget was actually designed by old man Carter and he sold it to General Motors in the mid sixties. Then? When I did design the thermoquad the most fantastic split board car would ever built in my mind
Those are all newer models of Carter, you can tell by the bleed screws, the best ones screwed straight into the front instead of being on the angle
Incorrect! The tooling was changed several times over the years. Most recently as edelbrock adopted the annular primary boosters and had to increase channel volume. Might look like a Carter, but after spending several days with the engineers at the Sanford facility, I can assure you they are much different.
MISSED ONE DETAIL . I worked at SUPER SHOPS back in the day when these both were being sold. I pressed for the your answer "what is the difference" so I could better sell to my customer. Then I was let in on the fact. The Carter is made of a better grade of aluminum and the Edelbrock is made of an alloy that polishes up easier ( unfortunatly this makes it highly subseptable to heat soak and boaling gas out of the bowls, under a non-freash air type hood) I have verified this more then a few times over the years. You can fix this with spacer/heat sheild/isolators space provided
A seven minute word salad before any real info... You lost me. Sorry.
Why don’t you soak the bad one in muriatic acid water mix 2 cups of muriatic acid to 4 litres of water for 30 min then rebuild the carb and try it it’s not junk even CLR would work your saying it’s garbage I’ve seen some crappy looking carbs run great the acid might eat some on the fancy coating off the carb but it will clean it and make it rebuildable and run just fine
I've been watching sevral of your videos lately & I must say, l love them. Very helpful in my learning about carbs better. I currently have a couple Eldebrock 750's I use. Now I do want to try out some Holleys or off brand Holleys someday. Such as Quick feul or I've also been interested in the Summit carbs. But back to my question, I've heard you talk about the deterioration of the finish from ethanol blend fuels & im wondering what I can do to help protect my carbs. I'm poor & quite hillbilly so my hotrods consist of 50yr old engines alot so they are broke down much more than they run so they sit. For storage I do dump the fuel out of them but im sure the residue still affects the finish, especially sitting?
Glad you’re enjoying the videos! Ethanol is just flat out nasty fuel. You can use and additive to help, but it’s still ethanol fuel. Draining the carburetor and the fuel system if it’s going to sit for an extended period of time is a great idea. I know that’s not alway possible. Just have to do what you can and be prepared to replace some components occasionally.
Makes you wonder if Carter wasn't just building a 1406, putting their name on it and sliding Edelbrock $10 per unit sold....
The only differences worth mentioning are the name cast on the block and the off-road needle. Even as nasty as those Carter 600 parts were, a good bath and you have a perfectly good and serviceable Carter 1406 block full of Edelbrock replacement parts.
this is awesom info!! thanks for breaking this down. now I know!
Thanks! I’m really glad this was helpful.
Had one on my 64 Olds 88 with a 394 cu. In. 345 HP
I have used edelbrock kits on all my old carters ,even used the metering rod kits in Carter.. bad gas from pre ethanol looks like the problem with that 600 carter .
Yup. Sadly it wasn’t able to be saved. The ethanol for sure killed it.
Carter made the Carter Thermoquad NOT the quadrajet. Also my dyno testing showed a slight hp edge going to the Competition Series Carter over the Edelbrock.
Incorrect. Carter also manufactured the Quadrajet. You’ll find all sorts of info on that if you Google it. Carter comp series and Edelbrock performer series carbs have all literally been made in the exact same facility with the exact same people, equipment and tooling. Show me the dyno results.
Rochester made the Quadrajet, two different companies. I made 72 dyno pulls comparing the same size,(750) Edelbrock and Carter Competition Series. All were jetted to maximum hp individually, the Carter Competition Series had a small hp edge.
@@quickdHemi 😂😂😂😂 sure.
I own a 13" dual rotor Land&Sea Engine Dyno. It's fully equipped with exhaust gas temp probe, A/F meter, and weather station. You might also check out the article I wrote for Mopar Action Magazine,(Booze Power, Feb, 2007) it was about converting a Carter Thermoquad to E-85. This was about 5 years before I bought my dyno.
If you disassemble an Edelbrock and a Carter Competition Series side by side you'll notice the boosters are completely different in how they meter fuel. You'll also see the jetting is far different between the two as well
@@quickdHemi sure bud. You don’t even know Carter also made the Quadrajet. We already did a side by side video on comparing the comp series and Edelbrock. They’re practically identical. Your made up dyno stories are mildly entertaining, but it’s boring now. Cheers!
Nice bro I,m from India 🇮🇳🇮🇳
Good info as always can't wait to see your video on the new Edelbrock race carb
I should have my hands on one in the next couple weeks. Very excited they are very close to shipping.
My 1968 base model charger had a Carter ABS on it and I found a original Carter AVS, think it’s 4011S if I remember it right, I know the difference, but what one performs better, the kick down linkage was not working I’m guessing because it works of the vacuum secondary’s and the ABS has open secondary’s?
I mean AFB, not ABS lol
How is it possible for one of these carbs to bleed down after sitting over 4 days? I actually have a Carter Competition series carb. It’s definitely not making oil, so it’s not going that direction. I have the stock mechanical fuel pump on a 383 Mopar.
Hello ethanol fuels! Depending on what elevation you’re at, ethanol boils at 174 degrees. Once you shut off an engine that’s been running at temperature, it doesn’t take long to boil it all away.
every time you do that thing with the shop rag it gives me nasty flashbacks to that time i was abducted and held for ransom.
Wait till you find out what happens next!
My Carter uses a vacuum piston for choke return. What does edelbrock utilize to return the choke
Good morning, so I was rebuilding my carb yesterday, Edelbrock 1406, supposedly, and when I was adjusting the floats I just happened to glance over at the bottom half of the carb and on the side of the body it says Carter, wtf is that all about, I bought the carb used above a year ago and never noticed it before
@@diesel1586 you have a really old carburetor. Early on they used the same tooling in the main body and airhorn assembly.
Oh great… I bought it from some guys on Long Island that had a corner building in an industrial area FILLED with a lot of good stuff
Someone needs to build a better high performance carburetor other than Holley's with the complicated idle bleeds, power valve and others. At one time there was the Kendig Carburetor, NHRA said it was a fuel injection way back in the 1970's.
They aren’t complicated at all. Just requires learning how to tune it and to gather the correct data from the engine to make the decisions on what the tuning process needs to be to get where you want to go.
Great comparison video, thank you. Here in Canada, Shell sells 91 octane gasoline with no ethanol added. Better for carbs and FI. Not sure if it's the same in the US??
Not all gas stations have ethanol free gas here in the US. Some areas it’s easier to find, some it’s impossible. Sucks!
FYI that is no longer true! as part of Trudeaus "clean fuel standard" all gasoline sold in Canada now has a minimum 10% ethanol content, and that will go up to 15% eventually.
Whats the big difference about the thermoquad carburetors ??
muriatic acid and water dilution with the correct PPE people and be careful the finish will be trash but it will work and I’ve powder coated them after that but I could save that all day long
Can you do a video on dual carburetors tuning , I have a tunnel ram with two old AFBs on it
Doubtful. I rarely work on any two four set ups. Most get frustrated with them and got to something that works. I’ve only done one video on two four stuff. You can check out that video as there are a couple things you can to to help the tuning process.
i was wondering performance wise is the carter afb better than a carter quadrajet for racing...i have a afb on my 78 bronco and i had a quadrajet on my 68 nova, nova ran mid 7's i/8th mile times back in the 1990's and i really liked the quadrajet on it, had a local carb guy modify it
the reason i was asking i like the carb, but my 400 in my bronco is slightly modified with pistons ,cam and headers and intake.....
@@mrpenland I absolutely love a very well tuned quadrajet. Very hard to beat their repeatable performance. I can tell you for the average tuner/user, the new VRS carb would be my go to choice. The 650 released already and the 750 is just a couple weeks away. I have a 650 and when the 850 is ready I’ll pick one up for my project. I do love the AVS for street cars, but as far as using for a race piece, I’m not sure that would get the results you’re looking for. The Bronco would do well with the AVS2.
Does anyone know if Thermoquads use the same tune up kits (gaskets, jeta and metering rods)?
As an Edelbrock carb? No. Not even close.
I ran an edelbrock for a while until I found out how crappie they were when I put a holley on my mild 350
Sure if you like your motor to stall on hard cornering and breaking a Carter edelbrock probably is a better choice for you
If I'm reading your comment correctly if you did a hard corner in your car with an Edelbrock it would stall? I have the Edebrock AVS2 and if I make a hard left turn my car cuts off Hmmm.
Yup Edelbrock shamelessly copied everything from the competition series.
I think the real confusion is about the factory installed competition carburetors. Different secondary weights, 3 step rods for Chrysler, and the 64 Pontiac with a built in fuel filter.
They purchased the entire manufacturing facility and keep the entire staff that was making the competition series. Not a copy. It’s literally all the tooling and the people and parts and processes. Those folks just changed the name on their shirt and paycheck and kept on building.
Who came first