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Old 08-12-2011, 10:24 AM   #1
veinbar
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Join Date: Mar 2007
Location: Austin, TX
Posts: 292
RPM Calculator

This is the best RPM Calculator that I have found on the internet. Fun to play around with and enter various gears and tire sizes. It helped me determine Which rear ratio, transmission, and tire size to go with...

http://www.chevellestuff.com/tools/rpm_calculator.htm

For example...
Old Setup: 275/60/15 tires + TH350 transmission + 3.08 Rear @ 70mph = 2600 RPM
New Setup: 275/60/15 tires + 700r4 transmission + 3.73 Rear @ 70mph = 2194 RPM
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2008 Yamaha Zuma 50cc - Daily Driver
1979 Chevrolet Bonanza SWB; 357ci, TH400, 3.73 Posi - Daily Driver
1976 Chevrolet Sport Van SWB; 355ci, TH350, 2.73 Open - Rape Free
1972 Oldsmobile Cutlass S; 455ci, TH400, 2.73 Open - SOLD (but I still claim to own it from time to time)

Last edited by veinbar; 08-12-2011 at 10:32 AM.
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