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Old 02-25-2013, 05:39 PM
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quadrajet #7040511

hello ...This is my first time here...So my question is...
i own a 1970 GMC c1500 with a 350 cu.inch and a th350 tranny... the 4 barrel carb is really shotty... so im looking to replace it from something at Summit Racing the qjet # is (7040511/ QT1130) what would be the best replacement thats bolts right on w/o much issue???
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Old 02-25-2013, 06:04 PM
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Quote:
Originally Posted by crzo68 View Post
hello ...This is my first time here...So my question is...
i own a 1970 GMC c1500 with a 350 cu.inch and a th350 tranny... the 4 barrel carb is really shotty... so im looking to replace it from something at Summit Racing the qjet # is (7040511/ QT1130) what would be the best replacement thats bolts right on w/o much issue???
Why not rebuild and tune the Q-jet? They are a good carb and the cost for a kit and a bucket of carb cleaner is around $50, a new carb is many times that. And unless the carb is also a spreadbore like the Q-jet you'll need an adapter to mount it to the stock intake (not usually recommended), or a different intake. Then there's the throttle bracket needed to hook the throttle and detent cables up.

That said, Summit sells a clone (Summit brand) of the Holley 4010 that's a decent carb and is the cheapest carb they sell, I believe. Some guys like the Edelbrock Performer/AVS carb. Then there's the tried and true Holley vacuum secondary 600 cfm. Using one of these on an Edelbrock intake like the Performer EPS p/n 2701 will wake up a stock engine a little. Using long tube headers and dual exhaust helps even more, but will usually require a floor mounted shifter.

Summit has some rebuilt Q-jets that aren't too expensive, but I have had no experience w/them.

http://www.summitracing.com/search/d.../summit-racing
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