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Mod | | | Forums66 Topics128,162 Posts1,056,950 Members48,458 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
| | THANKS!
For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Jul 2000 Posts: 962 Shop Shark | | Shop Shark Joined: Jul 2000 Posts: 962 | Several good auto parts stores sell a Rochester Techbook that tells how to rebuilt/tune/modify Q-jets for different apps. There were several distinct different models of Q-jets, and they have their own quirks. The only one to avoid is the one with the electrical connector on top from late '70s-early '80s. The connector is an electric power valve controlled by the primitive early emissions computers. Not the hot ticket for aftermarket use.
The older Q-jets are very popular with the V8 Pontiac crowd, as the same well prepared Q-jet will work on a 326-455 pontiac with minimal tuning.
good luck
chip
Preaching the Hot Rod Gospel according to the 4-stroke apostles:
Suck, Squish, Fire and Fumes
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