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gears for the bird

This is a discussion on gears for the bird within the Firebird / WS6 forums, part of the Vehicle Specific category; I'm running a 12 bolt with 33 spline axles and 4.30 gears. I love the 4.30s. The 1st through 4th ...

  1. #21
    Where's the tequila?
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    Black
    '02 Trans Am WS6

    I'm running a 12 bolt with 33 spline axles and 4.30 gears. I love the 4.30s. The 1st through 4th is a bit tighter than 4.10s, and I am able to step up a gear with them over the 4.10s. Example: At 25-30 mph, I can be in a gear higher than I could with the 4.10s, allowing me to run a bit lower rpm. With the 4.10s and my cam, if I tried going to that gear, the rpms would be a bit low and the car would start to surge. BTW, I am also getting 22.8 mpg highway out of 497 rwhp with the 4.30s. About 2 grand at 70 mph on the freeway, and if I shift down to 3rd from there and punch it, the grin lasts for several hours.
    Last edited by Zeppelin; 08-31-2010 at 02:49 AM.


    PEACE....from Zeppelin

  2. #22
    Dynamic duo naperws6's Avatar
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    black
    02 HAWK aka the beast

    Quote Originally Posted by Zeppelin View Post
    I'm running a 12 bolt with 33 spline axles and 4.30 gears. I love the 4.30s. The 1st through 4th is a bit tighter than 4.10s, and I am able to step up a gear with them over the 4.10s. Example: At 25-30 mph, I can be in a gear higher than I could with the 4.10s, allowing me to run a bit lower rpm. With the 4.10s and my cam, if I tried going to that gear, the rpms would be a bit low and the car would start to surge. BTW, I am also getting 22.8 mpg highway out of 497 rwhp with the 4.30s. About 2 grand at 70 mph on the freeway, and if I shift down to 3rd from there and punch it, the grin lasts for several hours.
    My vote goes for the 4:30's

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