what gear to use

[talgregory]

i have a powerglide trans with frist gear is 1.76 and a 33" tires . going to trun the eng about 8500 . what gear do i need :?:


thanks talgregory

[chevyfireball]

If you're running 1/8 mile I'd run a 4.56. If its quarter mile it'd be 4.30 for me.

[BillyShope]

Essential to know the horsepower per pound. I would suggest you use Page 1 or Page 2 at my site. As I point out above the spreadsheet, the results are for comparative purposes only. But, that's exactly the purpose you intend.
http://www.racetec.cc/shope