that's easy: John Osborne Quadrajet Performance Mod and Rebuild Specialist 270-737-4467 JOP455@AOL.COM
I sent mine to Jim Weise and he did a great job. I called Mr. Osborne but I found his customer service to be, shall I say, lacking.
Carb Exchange in Haddon Heights NJ has d done 2 for me a 750 and the 800 i now have on my 455. Came out perfect not too expensive and quick turnaround. they have been in business a long long time.
I would recommend John Osborne as well. He did a great job on my old carb and distributor! Always took my calls and gave me all the time on the phone I needed. Even when my repeated questions, must have seemed very redundant and ignorant to him. Super guy. Just MHO. Regards, John.
If this is a stock rebuild--no fancy tuning, just a return to what GM intended--the best place is YOUR GARAGE. It's not at all difficult, it is fairly precise. You'll probably want to subcontract the re-bushing of the throttles to a local machine shop. You could do-it-yourself but you'll need to buy some special tools. Beyond that, it's just cleaning, fresh gaskets, and careful assembly and adjustments. High school kids can do a good job of overhauling a carb. Hot-rod tuning is another matter; the pros have a whole list of tricks, and can re-plate the carb so it looks like new as well--although if you were to buy a copy of Cliff Ruggles book on Q-Jets you'd have made a good investment. (the book is printed in Communist China; expect the binding to fall apart in a few years.) http://www.amazon.com/Rebuild-Modif...2024609?ie=UTF8&s=books&qid=1194012758&sr=8-1
If you want it replated and rebuilt, Kinetic Performance did mine and I couldn't be happier. Beutiful job. They're in Ithaca NY.
