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Thread: Rear End Gears
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06-11-2010, 11:00 AM #1
- Join Date
- Sep 2009
- Location
- Maine
- Posts
- 93
NBM- 2002 pontiac Trans Am Ws6
Rear End Gears
Hey does anyone have 2002 trans am automatic with 4'11 gears, I got 3'42s right now and thinking about upgrading to 4'11s and was wanting to know if anyone had those and how much of a difference it makes in your RPMs and your top speed anyways please let me know I'm gonna try and make this upgrade very soon.
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06-11-2010, 11:17 AM #2
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06-11-2010, 11:21 AM #3
I just upgraded ours from 3.23 to 3.73. For an A4, that's about as steep as you want to go if you do any highway driving.
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06-11-2010, 11:26 AM #4
- Join Date
- Sep 2009
- Location
- Maine
- Posts
- 93
NBM- 2002 pontiac Trans Am Ws6
That's what i figured, i was talking to someone about it yesterday and he was saying it doesn't really make too much of a difference in the RPMs about 200 to maybe 500, he's worked on a lot of Ls1 and used to have a hemi truck with 4'56s in it and drove it daily lol.
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06-11-2010, 03:06 PM #5
3.73 for auto unless you plan on getting a cam/converter that would want to see a lower gear like a 4.10. If you are leaving it stock, don't go paste 3.73 for an A4.
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06-12-2010, 02:21 AM #6
- Join Date
- Sep 2009
- Location
- Maine
- Posts
- 93
NBM- 2002 pontiac Trans Am Ws6
Its not stocked forged motor with cam, heads, headers, and stall converter. I'm probably gonna stick with 3'73s i already have problems hooking up from a dig so i don't think 4'11s would help any and plus i don't wanna lose my top end.
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