RPM Calculator

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Popular Transmission Ratios - use for input below TRANSMISSION 1ST 2ND 3RD 4TH 5TH GM Muncie (M20) 66-74 2.52 1.88 1.46 1.00 n/a GM Muncie (M20) 63-65 2.56 1.91 1.48 1.00 n/a GM Muncie (M21/M22) 2.20 1.64 1.28 1.00 n/a GM Powerglide 1.76 1.00 n/a n/a n/a GM Turbo Hydra-Matic 350 2.52 1.52 1.00 n/a n/a GM Turbo Hydra-Matic 400/4L80E 2.48 1.48 1.00 0.78 n/a GM Turbo Hydra-Matic 2004R 2.74 1.57 1.00 0.67 n/a GM Turbo Hydra-Matic 700-R4/4L60E 3.06 1.63 1.00 0.70 n/a Tremec 3550/TKO 3.27 1.98 1.34 1.00 0.68

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Input - Note: Currently set for my personal trans (TH350) and rear tire combination.

1st gear ratio:		3rd gear ratio:		5th gear ratio:
2nd gear ratio:		4th gear ratio:		6th gear ratio:

Tire:

155 165 175 185 195 205 215 225 235 245 255 265 275 285 295 305 315 325 335

x 30 35 40 45 50 55 60 65 70 75 80

x 12 13 14 15 16 17 18 19

Rear axle ratio:

Speed (mph):

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1st gear RPM is:		3rd gear RPM is:		5th gear RPM is:
2nd gear RPM is:		4th gear RPM is:		6th gear RPM is:

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Input - Second set for comparison using 700R4 specs

1st gear ratio:		3rd gear ratio:		5th gear ratio:
2nd gear ratio:		4th gear ratio:		6th gear ratio:

Tire:

155 165 175 185 195 205 215 225 235 245 255 265 275 285 295 305 315 325 335

x 30 35 40 45 50 55 60 65 70 75 80

x 12 13 14 15 16 17 18 19

Rear axle ratio:

Speed (mph):

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1st gear RPM is:		3rd gear RPM is:		5th gear RPM is:
2nd gear RPM is:		4th gear RPM is:		6th gear RPM is:

 

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© 1965-1970 SS 396 Showcase & Registry

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This website is designed and maintained by Webs by Dale™ (WBD). This website was created as a showplace for SS 396 and SS 396-optioned Chevelles, Camaros, and Novas. WBD shall not be held liable for any loss resulting from the use of the information contained on this website. This website is the sole property of WBD. Design, layout and website photographic images were all created by WBD or submitted by readers and are not to be copied or distributed without express consent from WBD in writing. Use of WBD name, logo and identity is strictly prohibited by law.

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