Thread: Gear Ratio

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Here is the cam specs, im looking to be able to jump on it every once in awhile, if i run 4.11=3206 at 65 is that rpm to high for freeway? 4.56= 3557 at 65 And if i run 2.73 will i be able to still jump off the line good?


Cam Style Hydraulic flat tappet
Basic Operating RPM Range 2,000-6,000
Intake Duration at 050 inch Lift 230
Exhaust Duration at 050 inch Lift 230
Duration at 050 inch Lift 230 int./230 exh.
Advertised Intake Duration 280
Advertised Exhaust Duration 280
Advertised Duration 280 int./280 exh.
Intake Valve Lift with Factory Rocker Arm Ratio 0.520 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio 0.520 in.
Valve Lift with Factory Rocker Arm Ratio 0.520 int./0.520 exh.
Lobe Separation (degrees) 110

Originally Posted by 1972chevy

And if i run 2.73 will i be able to still jump off the line good?

Not likely.