The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post

Greasey Harley · 03-18-2015, 02:34 AM

The thing about a Q-Jet is, they need to be matched to the engine.
Different cam = different tune on carb
different static compression = different tune on carb
different heads/valves = different tune on carb
different exhaust or a .030 over bore could even possibly effect the way a Q jet preforms.
You need ALL this information, to figure out how to properly configure your Qudra-Jet.
There is no ONE setup for a Q-Jet, that is why people hate them.
You could take a Q-Jet off one 350 (where it worked perfectly) and put it on a another 350 (different heads, cam, etc) and it will run like $#!T

...but if you can get it tuned, it is the best thing in the world!!

03-18-2015, 02:34 AM	#2
Greasey Harley Registered User Join Date: May 2013 Location: Post Falls, ID Posts: 901	Re: Which jets and rods for my Quadrajet? The thing about a Q-Jet is, they need to be matched to the engine. Different cam = different tune on carb different static compression = different tune on carb different heads/valves = different tune on carb different exhaust or a .030 over bore could even possibly effect the way a Q jet preforms. You need ALL this information, to figure out how to properly configure your Qudra-Jet. There is no ONE setup for a Q-Jet, that is why people hate them. You could take a Q-Jet off one 350 (where it worked perfectly) and put it on a another 350 (different heads, cam, etc) and it will run like $#!T ...but if you can get it tuned, it is the best thing in the world!!