391 / 410 gears
Thread Starter
Racer
Joined: Jul 2004
Posts: 330
Likes: 7
From: nth ridgeville ohio
391/410
Team Owner
Joined: Sep 2003
Posts: 25,394
Likes: 2,741
383 stroker/dart pro -1 heads ported / polished-solid roller--248/252 comp--750 pro form carbed--msd--3 inch straight duals--t-56/ hurst short throw shifter --355 gears--17 in wheels and much more that i cant bring to mind right now . its running low 12s --has the capabilities of running mid 11s and i think the gear change will get me there
It's an IRS D44 with 3.54's (you mentioned 3.55) or a solid axle or maybe a more common 3.45 if it's an IRS? You mention 17" wheels and the wheel doesn't have anything to do with the numbers. I wouldn't think you'd have any trouble "bringing to mind" what is/was done if done to accomplish the low 12's.
Last edited by WVZR-1; Mar 23, 2013 at 10:14 AM.
Thread Starter
Racer
Joined: Jul 2004
Posts: 330
Likes: 7
From: nth ridgeville ohio
gears
If you know your build, tires etc presently and have a "history" with the same combination your answer is in the "math"! Suggestions aren't going to get you there. Your knowledge of the car, the driver and if it's got a performance record you can document you're set. If you have no history, it might be wise to generate some and then rethink it. If it's just an occasional "blast" then both should see improvements.
It's an IRS D44 with 3.54's (you mentioned 3.55) or a solid axle or maybe a more common 3.45 if it's an IRS? You mention 17" wheels and the wheel doesn't have anything to do with the numbers. I wouldn't think you'd have any trouble "bringing to mind" what is/was done if done to accomplish the low 12's.
It's an IRS D44 with 3.54's (you mentioned 3.55) or a solid axle or maybe a more common 3.45 if it's an IRS? You mention 17" wheels and the wheel doesn't have anything to do with the numbers. I wouldn't think you'd have any trouble "bringing to mind" what is/was done if done to accomplish the low 12's.
Instructor
Joined: May 2012
Posts: 151
Likes: 3
From: Pennsylvania
your right about 17 in wheels and history--i run 26in nittos and for history i ran last year in low 12s dont go to track that frequentlly but enough times to get an idea of what its doing. im not hard core track but i sure do love doing the quarter mile. just looking for opinions on what to expect from a much lower gear ratio as i still want to keep the car streetable ( thats all)--my current gears are355 after market Yukons.
Only things done were to open up the air flow with K&N in and Hooker headers out along with a custom tune to take advantage of the increased airflow. It works well.
I think the loss in gas mileage is mainly due to the fun factor of this setup. I'm prone to getting on it now and then.
If you keep it reasonable you shouldn't break anything. That becomes a concern when you start to pump thing up.
Have fun...
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Team Owner
Joined: Oct 2004
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From: altered state
St. Jude Donor '05
Either gear would work but Id personally go 4.11 with that
Car will pull much quicker with a drag radial you can lower that 60 easy and dip in the 11s will drive just fine. Opinions will vary.
Car will pull much quicker with a drag radial you can lower that 60 easy and dip in the 11s will drive just fine. Opinions will vary.
Race Director
Joined: Jan 2002
Posts: 12,263
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From: O'Fallon Missouri