Carb selection help desperately needed
 

Hi guys, I am having an awful problem with carbs these days and I need some suggestions before I go any further. I have a 73 Grand Am 455 with the factory intake on it. I need a new carb for it, and to make a long story short, I have tried two new (reman.) quadrajets and both of them were junk right from the start, the last one had worn out throttle bushings right out of the box. I looked in Jegs and saw they had a Q-jet replacement Holley. I called and asked them about it and they said it should work fine, so I ordered it. Well, it would work fine if I was putting it on a Chevy, but it won't work on a Pontiac (wrong choke,no power brake vac,pcv port hits on vac port on intake,etc.). Bottom line is I need a carb and I can't wait to have someone build me a good Q-jet. What do you guys recommend that I can bolt on and be done with this? I don't care at this point what kind it is, I just don't really want to change the intake at this point, so if I need an adapter plate, so be it. I just want to drive my car. Thanks for any suggestions.

You can run that carb on a Pontiac. I have it on my 400 right now.

I saw that you were on another thread. What did you do with the pcv port on the front of the carb?

The pcv port is in the back of my carb. I screwed in a fitting and ran that to my power brakes.

Ok, I may have jumped the gun a little on the Holley. I didn't care about having a choke on it so that didn't matter anyways. I screwed the plug out of the back and put a nipple in there and used it for the brakes. Where I got screwed up on that was the instructions said that was for an A.I.R. system gulp valve, but I didn't think far enough ahead to realize it's still just vacuum(dummy boy). The only thing I had to modify was that port on the front, I trimmed it with a die grinder and put a rubber plug over it. The car runs good again!!! Seems so nice to be able to pull up to a stop sign and not have to use both feet. I'm sure I'll have a little fine tuning to do, but that's part of the fun. Thanks for the assist Mr. Milner, it is appreciated.

Good to hear you got it going! Have fun with that 455!