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Old 09-13-2017, 06:18 PM   #1
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Join Date: Jul 2011
Posts: 43
Default Advice on powerglide first gear

2,900 lb race weight. Quarter mile only. grudge race car. 408 LS based engine. Peak power of 729 at 7550, peak torque of 573@ 6200. 6500 converter, shift at 8000-8100, cross around 8200-8300. 4.56 gear, 28 or 29" tire.......whichever seems to cross where we need it to. Expect the car to go very low nines at around 144-145. If we were to run a powerglide trans, what would be your opinion of the ideal first gear on the glide? I know a 1.80 will recover from the gear change better, but would a 1.97 first gear be better for overall performance?
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Old 09-13-2017, 06:33 PM   #2
Greg Hill
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Location: Louisville , KY
Posts: 1,854
Default Re: Advice on powerglide first gear

That's one of those deals that you just have to try. Not a lot of rear gear but a short tire, I would think the 1.80 but you will never know until you try them both.
Greg Hill 4171 STK
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