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Have a few questions about this carburetor. I know this is in the wrong forum to a degree. This is on a 65 327 convertible Corvette. But I'm a C3 guy wishing to help out a member of my car club.
The car isn't NCRS. But it's close from what I can see.
Here are pic's of his Carb.
Hopefully Lars or others will know what we are looking at here. The gentleman who owns the car is getting up there in years and working on the car has gotten very difficult for him. He can still drive just fine however. The car was recently repainted, and looks fantastic. However the process from start to finish took nearly 2 years. All this sitting hasn't been kind to the carburetor and it's running but poorly.
My questions are.
1. Is this the original carburetor?
2. If not, what is it from?
3. Where to get a quality gasket/ seal, rebuild kit for it?
4. Any tips at all on getting it setup again? Float level? Anything else I should know?
Thanks much for any help. I'd really like to help the guy out.
Didn't think to photograph numbers on the intake manifold. Sure looks like a factory manifold from the 60's to me. The whole car is extremely correct. Even has original dual snorkel air filter.
I haven't touched anything yet. He said his son got it running for him after the reassembly of all the trim and carpets, etc. After paint. Then his Son moved away. I figured I would indeed check the distributor, check advance, vac can performance, setup points, dwell, timing, etc. Those things I can do in my sleep. This carburetor I know nothing about. Car is clearly running rich on start up. Thinking carb could use a good clean after sitting so long. Don't wish to order anything until I know what I'm working with.
carter is correct
Fuel supply Carter four-barrel Type WCFB Model 3846247
Carter aluminum Type AFB four-barrel
Holley four-barrel Model 4150 Holley 4150 four-barrel
Ram-Jet Fuel Injection Holley 4150 four-barrel
I think if it's been sitting for 2 years , the gas has gone bad and probably gummed up the carb some. Try draining the tank and putting fresh in , and maybe drive it around for a while .The new gas may dissolve the gum.
I've been a mechanic for 50 years. No, that never works. Wishful thinking. What does work is strip the carb. Clean the carb properly, assemble and adjust the carb.
I've been a mechanic for 50 years. No, that never works. Wishful thinking. What does work is strip the carb. Clean the carb properly, assemble and adjust the carb.
I've heard that another solution to carb problems is to convert over to EFI. Perhaps you'll get to try out the new V2 Holley Sniper EFI system.
I've heard that another solution to carb problems is to convert over to EFI. Perhaps you'll get to try out the new V2 Holley Sniper EFI system.
that made me chuckle. This is such an original mid year convertible. It has so much value. The factory original carb absolutely has to stay. This isn't like playing with a rubber bumper C3.
Having to do maintenance like annual re-building of my carburetors to compensate for the crappy gas they sell today is what made me switch to a Holley Sniper EFI system in the first place. My 1968 started as a very well kept mostly correct Corvette and all the parts that I have removed is cleaned, rebuilt and vacuum packed before being stored away for the future of my C3.
I keep all the original parts in case someone wants to undo the "Improvements" I have made no "permanent" improvements/ modifications that would prevent a proper restoration.
3721SB pops up as OEM for 62-65 vette, 300 HP 4 spd
...
looks very much like a current Edelbrock AVS
...
Perhaps someone on C2 would be willing to scan the carb section of the shop manual for you?
Originally Posted by 4-vettes
I've been a mechanic for 50 years. No, that never works. Wishful thinking. What does work is strip the carb. Clean the carb properly, assemble and adjust the carb.
I had one on my '65 327/300. The Edelbrock is a clone of the AFB. They aren't complicated carbs to strip, clean, and re-gasket — with 50 years of experience, you won't have any issues with it at all. I'll see if the shop manual has a section specifically for the AFB.
The best solution to carb gumming up issues is to drive it twice a month, at least.
You are right in that the "new" gas does not like to sit in a car for six months or more, there are a lot more lighter weight hydrocarbons in there than there used to be, and they will evaporate just sitting there, more so than the 70s gas.
Call up Allstate Carb in Long Island NY and ask them for a kit......they carry accelerator pumps that don't go bad in one year.
That is a correct carb for a base model mid year.......
That will clean up well.....good candidate for an Ultrasonic cleaner......
Excellent! Thank you guys! The manual is just what I needed. And a source for quality parts. This forum is the best.
And to the suggestions of EFI. Guys, my car is converted to EFI. This one isn't my car. I'm thinking a good tune up and a carb clean and adjustment will be all he needs. Somewhat cheaper than a EFI conversion. He's a really old guy on a pension.
that made me chuckle. This is such an original mid year convertible. It has so much value. The factory original carb absolutely has to stay. This isn't like playing with a rubber bumper C3.
AFB Carb Questions
