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GEAR RATIO COMBINATIONS CALCULATOR

Please See RPM & Ratio Table Below 

 
 RPM
 Rear Axle Ratio
 Transmission Ratio
 See the ratio table below or go to TABLE 2  for more transmission ratios.
 Tire Diameter in Inches
 Speed in MPH
Speeds @ gear ratios based on the above information.
2.59 2.73 3.08 3.36 3.55 3.70 4.11 4.56

Transmission1st2nd3rd4th5th6thRev
Corvette 3sp 2.211.321.00ooo2.51
Muncie Wide 4sp pre-'742.521.881.461.00oo2.59
Muncie Close 4sp pre-'742.201.641.281.00oo2.27
Borg Warner T-10 Wide 4sp early2.561.911.481.00oo2.64
Borg Warner T-10 Close 4sp early2.201.661.311.00oo2.26
Borg Warner Wide 4sp '74 up2.641.751.341.00oo2.55
Borg Warner Close 4sp '74 up2.431.611.231.00oo2.35
ZF 6 speed (Corvette) 2.641.781.301.000.740.49oo
Powerglide1.821.00oooo1.82 
Turbo 3502.521.521.00ooo1.94 
Turbo 4002.481.481.00ooo2.08 
700R43.061.631.00.70oo2.29 
Richmond OverDrive 6 sp3.272.131.571.231.000.76o

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