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hello, i'm rebuilding my edelbrock.
now are my fuel bowl baffle plate's in a bad condition.
Parts are rotten of.
I can't find a new one nor a used carburettor to get them from.
i hope someone can explain to me what they do and what happens if i don't put them back.
I might be able to replicate them reasonably well from stainless steel.
There are way to many threads on this site, my car runs like crap and you ask what carb, guess what the answer is? The AFB had known hot start issues back to the 60's, Chrysler had TSB's on them. There is a reason the Thermoquad had a Bakelite body. Maybe the new AVS2 might be the best Edelbrock to try. More people seem happy with there carbs. I never personally dealt with the AFB/AVS in shops but the rest of the Carter line up sucked. The YF 1 barrel usually had a dead spot on acceleration, rebuilding made no difference. The BBD 2 barrel had issues with sticking needles and seats. The Thermoquad was Ok but had some hokey features, they all had the inferior divorced choke. A proper built Qjet or one of Quickfuel Holley's is probably the best bet, or new Street Demon which is the improved version of the Thermoquad. The only issue with it is running lean on the secondary side for high performance motors. No new carb will be tuned for your motor without checking them with a wideband. Good luck.
I think this person is running on propane not gasoline and may be from across the pond where this practice is common. Just a guess from afar...... Tedd
I always thought you needed a specialized vaporizer assembly? They used to be more common here, I ran an old 73 318 Dodge work truck converted. Great until below -40, then good luck in starting it.
The Edelbrock carb is a rehash of a 60 year old design. A well built Qjet is a better carb.
totally agree. I had an Edelbrock on my 455 and it was a dog. After getting some quotes to dyno and test the O2 levels and tune the Edelbrock, I decided to replace my original damaged Quadrajet with a numbers matching rebuild for $350. Huge increase in power and overall performance. The only complaint is the carb I got didn't have the right choke and we had to modify it to use the original.
Jarco that looks like ethanol gas has eaten that carb up. Anything carbureted should run on ethanol-free gas especially if it sits for longer periods than a daily driver,
While I'm not trying to spark a full-on debate as each situation has many variables....any carb will be a dog right out of the box if not tuned to your total running package. A well-tuned E-Brock will run just as well as a well-tuned QJet...you just need to pay attention to all the details.
I have a Cliffs QJ on the 442 and a 1900 series AVS on a small block vette. Both run extremely well. With the Edelbrock rod, spring, and jet kit, and by following the tuning graphs you will have a good running carb, Only way to get it better is to tune the engine on a dyno.
As for the QJ....Cliff worked his magic on that.
Last edited by droldsmorland; September 7th, 2021 at 08:27 PM.
Jarco that looks like ethanol gas has eaten that carb up. Anything carbureted should run on ethanol-free gas especially if it sits for longer periods than a daily driver,
While I'm not trying to spark a full-on debate as each situation has many variables....any carb will be a dog right out of the box if not tuned to your total running package.
The 600 cfm Edelbrock I put on the original 350 before swapping to a 455 ran great out of the box. When I tried the same thing with a 750 cfm Edelbrock on the 455 is where I ran into problems. The numbers matching Quadrajet I put on the 455 runs great out of the box. I am running stock on the rest of the motor except the cam which I do not know about. Probably would need tuning if not a stock application.
Ya QJs are sensitive to the vacuum signal. The primary power rods spring, the AVS door spring, P & S jetting, secondary rod cam etc all need to be tweaked anytime a change is made. That's why I sent mine out to Cliff. I didn't have time to do it like I did when younger. EFI is next!
A lot of gains are to be had with a properly tuned carb and ignition.
Last edited by droldsmorland; September 12th, 2021 at 07:23 PM.
Ooooooh, the evil ethanol boogeyman!!! What a bunch of hooey.....
e85, yes, problems
E10 pump "gas"oline, no problem
E10 can be an issue on small motors, 2 stroke carb stuff especially. Our stuff can sit 6 months. I have seen 0 issues even sitting over the Winter with my carb vehicles. It is possible they have a E20 or E30, which would explain that corrision.
September 6th, 2021, 01:09 PM
