I recently purchased a 1964 Wildcat with a 401 with a quadrajet. when taking off in a spirited manner going left from a stop sign it tends to bog down. it does not do it going right or straight. I plan on going through all the basics, but wasn't sure if anyone has run into this particular issue before.
Get rid of the Rocheater & find the correct number '64 AFB. They are more popular than the 425. Both are only one year carbs. 3633sS 401 auto trans. 3635S 401 manual trans. Tom T.
No they did come with Rochesters, But they were a problem from day one & very few can properly rebuild them. They seem to cause all kinds of problems like what you are talking about. Get them rebuilt & they are fine for awhile then go back to being cantankerous PIA's The AFB will perform better because it flows more CFM's of air. I think the Rochester flows 475 CFM's where as the Carter AFB flows 625CFM's.
ok, I will definitely look into that, any recommendations on where to buy one if I were to go that route?
You're best off looking for a rebuildable core at your local wreckers yard. Occasionally they come up for sale here on this forum. Most guys will replace worn out ones with an Edelbrock, which is the same design but a different spec. They can be made to work if you know what you're doing. The truth is, you can sub on any AFB off of a Buick 401-425 between the years of 1961 and 1966 and with a little tuning make it work. However, there may be linkage issues, so getting a 64 model would be the best. They are a very easy and forgiving carb to work with, and they are easy to rebuild. I can still tear one down in my sleep. And to Tom's point above, the Rochester 4GC is a nightmare to get right; it's my nemesis, the only carb that I have never gotten 100% on a rebuild. If you look for a core at a wreckers, pay close attention to the underside of the carb, they tend to corrode out which is likely what happened to your original carb and why it was possibly replaced years ago. There's a sacrificial steel plate that most guys failed to put back in back in the day.
Do you have an auto or manual??? I'm most likely sure it's an auto, BUT you never know. I will have to look in my stash. I MAY have one. IF I do I would have to make sure it's abuildable core. Then we can go from there.
Brian, if you want to take a gander at the service manual I have it on YouTube. https://youtu.be/yWsUv0yZtqM Look at 8:53 for the 4bbl Rochester.
