jlrz28

iTrader: (7)

So right now with a 9" running 3.25 gear with 315 35 17 MT Drag Radials. I am currently going through the lights @ 5500rpm. I dont want to go through any more than 6500rpm but not sure about what tire size to use with either gear to get that rpm.

Thanks

Ethan[ws6]

iTrader: (13)

If you stayed with that tire size and went to a 3.73:1 ratio you would hit line at ~6300.

Simple way to calculate it: (Current rpm/current gear)*new gear = new rpm

(5500/3.25)*3.73=6312

jlrz28

iTrader: (7)

Any calculators for changing tire height also? Looking for a good combination.

Thanks

SS SLP2

iTrader: (8)

good luck, Johnny
TRY this
http://wallaceracing.com/Calculators.htm