Best rebuilt Q-Jet?

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Aug 31, 2007 | 03:48 PM

column5

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From: Collierville TN

Best rebuilt Q-Jet?

Whose rebuilt Quadrajet is the best? I see that Holley, Summit, JET, and even NAPA have them. I've read on this forum to stay away from the Holley-rebuilt ones.

Aug 31, 2007 | 04:18 PM

celeryman22

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From what I have read most of the rebuilt Q-jets are not built correctly. If you want it done correct ask Lars if he is able to do it for ya. Or read his papers, ask some questions and do it yourself.

Mike

Aug 31, 2007 | 04:22 PM

column5

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From: Collierville TN

Quote:

Originally Posted by celeryman22

Rgr that. I've cleaned and rebuilt the thing, and I re-bushed the primary throttle shaft last night but I still have a rough idle and a bit of stumble at cruise throttle. Starting to think it isn't the carb...frustrated now...

Aug 31, 2007 | 05:09 PM

celeryman22

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What is the float set at? From what I have read if the float is not set perfect you can run into a wide range of problems. I believe anything newer than 1975 should have the float set at 0.420", Im sure Lars will chime to confirm.

I am currently working on my Q-jet also.

Aug 31, 2007 | 05:53 PM

SIXFOOTER

Le Mans Master

Joined: Jan 2006

Posts: 9,192

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From: Boca Raton Florida

Best is by Lars, he is the carb guy in here

Aug 31, 2007 | 07:32 PM

nastee383

Melting Slicks

Joined: Apr 2000

Posts: 2,145

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From: Ft. Walton Beach, Fl USA

Quote:

Originally Posted by column5

Whose rebuilt Quadrajet is the best? I see that Holley, Summit, JET, and even NAPA have them. I've read on this forum to stay away from the Holley-rebuilt ones.

JET does good work.

Aug 31, 2007 | 07:38 PM

ptroxx

Race Director

Joined: Apr 2007

Posts: 14,062

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From: Henderson Nv-Rohnert Park/Sonoma C o. ca/born in NY Rockaway Beach.

Quote:

Originally Posted by SIXFOOTER

Best is by Lars, he is the carb guy in here

Mine will be tuned on the advice of Lars.

Aug 31, 2007 | 08:42 PM

Tim H

Safety Car

Joined: Oct 2000

Posts: 3,593

Likes: 103

From: Southern Indiana

Mine was rebuilt by Holley and ran perfect on a stock engine.
Any upgrades and you will have to upgrade the Q-jet also.

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Aug 31, 2007 | 11:08 PM

column5

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Joined: Apr 2007

Posts: 177

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From: Collierville TN

Thanks for the info guys. After doing some research this evening, and playing with the motor a bit, I think my idle and cruise roughness may not be related to the carb at all. I think I may have lashed my valves a little too tight when I was rebuilding the top end a couple of weeks ago. Going to work on that in the morning.

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