Help picking out gear ratio
I'm about to change out the ring and pinion on my 58 chevy pu and would like to know what you think as far as gearing. I'm thinking 3.73 or 3.90 with 27.5" tall tires and a TH350 trans.
Chevy 383 all forged XE 274H Cam W 1.6 roller rocker arms
RPM Air Gap intake
Holley 850DP Carb
Vortec Heads 9.3 Comp
120hp shot of NOS
The truck is for fun, no gas milage concerns. Not much freeway use but I don't want to go too extreme with gearing. The engine makes a lot of torque so I'm just not sure exactly where I should be on gearing.