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Old Nov 14, 2010 | 06:54 PM
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Default What gears need help

let see were looking to make some gear changes ...tell me what gear will make this cars faster


99 z28 ls1 ls6 intake cam 557 557lift ASE
A4 VIG4500 410 GEARS 10 bolt the car has bolt ons
FULL WEIGHT 3660 w/driver
157 60'
11.66 115mph 1/4

The rear just broke its done picked up a 12 bolt
it has 373 gears
10 bolt had 411 gears
or do we go with 433 s

whats going to be faster on a 26" tire
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Old Nov 14, 2010 | 07:09 PM
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i had 4.56's out back when it was and m6 on a 28" tire, im not sure how high you plan to spin the motor, but if you can get away with 4.33's on a 26 do it, but i'd say switch to a 28 n the 4.33's n dont look back!
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Old Nov 14, 2010 | 07:30 PM
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come on people whos runnin what spill the beans
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Old Nov 15, 2010 | 07:26 AM
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If I do go with 433 and a 27 3/4 tire how much faster do you think it would go in the 1/4
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Old Nov 15, 2010 | 11:47 AM
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come on guys I need some imput on this.. maybe this is posted in the wrong place
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Old Nov 15, 2010 | 11:49 AM
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What rpm are you shifting at?
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Old Nov 15, 2010 | 11:52 AM
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trans is doing it on its own I think its like 6400 shift trappin at 6400 end 1/4 mile
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Old Nov 16, 2010 | 11:01 AM
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maybe I should have started this post with I think the thingy in the back makin noise so I put 10 bottles of #6 init and it make a funny smell now ............... nobody has any input on this issue about gears and tires
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Old Nov 17, 2010 | 09:09 AM
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Why dont you just go back to your old combo? Looks like it was workin good for you if you were trapping at 6,400.
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Old Nov 17, 2010 | 10:20 AM
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just tryin to get more out of it ...I think it will go faster just wondering what gear and tire combo would run the fastest with this set up. Im thinkin 433 gear with a 27 3/4 tire
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Old Nov 17, 2010 | 11:07 AM
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Hmmm. Idk, I was askin these same questions in another thread. I do know that if it works then leave it alone and persue something different like weight reduction or suspension or something.
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Old Nov 19, 2010 | 08:53 AM
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If u are shifting at 6400 and going through the traps at 6400 I would not change gears unless u want to spin it a lot higher. The taller tire will give you a bigger footprint and you will hook better but it will slow u down too. Is the car dead hooking? Do you need more tire?
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Old Nov 19, 2010 | 10:26 AM
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http://www.pszweb.com/car/gears.htm
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Old Nov 19, 2010 | 10:48 AM
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I had a 28 inch tall tire with 4.10's and 4000 stall and spun it to 7K (BBC). It was a really nice combo but was on the friendly side, could have been a bit more agressive. I never got the chance to take it to the track to know the trap RPM's.

Personally I avoid even thinking about a 4.10 or better with anything les then a 28 inch tall tire.
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