Recommendations for Carb replacement??
 

I currently have a stock 70 GTO convertible, TH400. The original quadrajet carb is damaged due to the threads being stripped where the fueil line connects to the carb. Don't think it can be repaired. I would like to replace the carb with a Holley, but not sure if it is the best fit. I am looking at the 80555C 4bbl 650CFM qaudrajet replacement carb. Does anybody have any suggestions? I am still running points on the car, but considering an electronic ingnition.
Thanks,

Troy

I have an Edlebrock Performer Competion Series carb that looks like a Carter AFB. Seems to work fine. :)

Do you have the 600CFM, Electric choke performance carb from Edelbrock? If so, are you running points or EI?

Has a choke flap but no electric choke or manual choke connected. I don't know how many CFM's it is since it came with my 400 engine. I am using a GM HEI distributor. :)

Pretty sure you can use a helicoil to repair fuel inlet...I know many ppl have done it...

The stock carb is 750 cfm. I would contact Cliff Ruggles on here about fixing yours or see if he has a replacement. I've used the Edelbrocks and in my opinion the OE Qjet was used for a reason. They offer unmatched performance, economy and reliability.
Do yourself a favor and stay away from store bought replacements. And definitely avoid a Chevy Qjet unless it is reworked to specs for your combination.

My 02 cents.

I absolutely second that recommendation! The original Q-Jet is the best carburetor you can use.

Cliff can repair those threads, and they will be better than new.

I ABSOLUTELY AGREE, after wearing out two Holly's and trying one Edelbrock, I went back to an original Quadrajet and it SCARED ME BAD. No comparison. I just can't believe I was dumb enough to get rid of it ever.

Charles

X 4 what the 3 above said.

i have a 70 Gp with a completely stock (with points) 400 and auto trans daily driver. i put on a new holley 650 spread bore carb. :boxing::D easy bolt on, with a few adjustments and a wire for the electric choke and it runs great. went that way because it was an easy/fast solution to keeping me cruising.

I have heard of "Cliff" repairing carbs before. Does he have a link/website for me to contact him??

Sure does, he has a Forum there also for you to ask him things.
http://www.cliffshighperformance.com/index.html

Cliff is everyone's first choice for Q-jets... which means a long wait time. If you'd rather not wait you can buy his book and rebuild your own with one of his kits.

Another option if you don't want to wait (or, like me, lack the ability/patience/knowhow to do it yourself) you can contact Jeff Walker (also a member on PY) and have him build you one. I bought one from Jeff last summer when I did the 2V to 4V swap on my Lemans and he did a great job. No issues, no fiddling/tuning, fired right up on the first turn of the key after install, very happy with the result. Reliable and still running great a year later and happy enough with the result to give him some free advertising... that says a lot these days. Just my :2cents:.

Scott

http://cgi.ebay.com/ebaymotors/ws/eB...category=34198

Here is a link to the guy I bought my Quadrajet from. The carb I bought looks great and runs perfectly. He often has different Pontiac quadrajets for sale. The coloring and quality of the rebulid is very nice. I've had a few Holley's and nothing has run as well as my current set up with a cast intake and quadrajet carb.

Was reading this thread, and I should second that. Jeff built a carb for my 455, I described cam and build of engine and he built accordingly. Exact same as above, it was set up very well and almost 2 years later is running perfectly, and to be honest, I just bolted it on, runs great so why mess with it.

A proffesionally rebuilt Q- jet. Cliff is a master. Mine is reliable, performs well and meant for the car in first place! Quality work.