Gear Ratio

[Jimbo1980]

I have a highly modified 93 LX Hatch with a supercharged 306 (11lbs boost, heads, cam, ignition, injectors, upper & lower intake manifold, custom tune, etc.) Car recently dynoed 481 hp at the rear tires.

Presently running 3.55 gears. At 65 mph my tach shows 2000 to 2100 rpm. I'm thinking of going to 3.73 gears...anyone know what rpm I would turn at 65 mph with the 3.73 gears???

Thanks,
Jim

"Long live the fox!"

 

[90lxcoupe]

what size tire? i run a 28" tire and im around 2600 at 80mph probly like 2200 at 75mph

Wallace Racing - Calculate Speed for given RPM, Rear Gear Ratio and Trans Gear Ratio

 

[nyr923]

try this site you can calculate your rpm for any speed

Gear Ratio Calc