Q Jet Question
Thread Starter
Burning Brakes
Joined: Jul 2004
Posts: 783
Likes: 38
From: Mankato Mn
Q Jet Question
I'm wondering what the difference is between Q Jets for an automatic or a manual transmission other than the odd & even numbers. Is there a reason I can't use an even number carb on my 4 spd car ?
Racer
Joined: Sep 2006
Posts: 446
Likes: 1
From: Punta Gorda Florida
Itll still work on your, just have to tune it... manual and automatic cars have a different tune on the carbs... but you have to adjust em no matter what, every motor is different
Race Director
Joined: Sep 2004
Posts: 11,874
Likes: 263
From: Arlington Va Current ride 04 vert, previous vettes: 69 vert, 77 resto mod
the difference is in arm off the throttle shaft that changes to accomodate kick down cables....not so relevant when going from an auto to a stick, however the other way around will not work unless you modify it
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,116
From: Crossville TN
Carbs for automatic transmission vehicles often have a 'dashpot' for dampening the throttle closure...to minimize deceleration spikes. I think a lot of the Q-Jets [on GM cars] used them, as well. There also might be some incidental linkage differences to account for TV cables, etc. that the transmission might require. Internally, I don't know that there is any difference.
