Quote:
Originally Posted by chuck at gw
This formula requires knowing trap speed - which like, if you know that you probably already know what the rpm was:
RPM= (MPH?Gear*Ratio?336) / Tire*Diameter
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You will need to adjust for converter slippage.
Equation (mph * 5.13 * 336) / 30
Value of mph Evaluated Equation
_70.00000 4021.9
_72.50000 4165.6
_75.00000 4309.2
_77.50000 4452.8
_80.00000 4596.5
_82.50000 4740.1
_85.00000 4883.8
_87.50000 5027.4
_90.00000 5171
_92.50000 5314.7
_95.00000 5458.3
_97.50000 5602
100.00000 5745.6
102.50000 5889.2
105.00000 6032.9
107.50000 6176.5
110.00000 6320.2
112.50000 6463.8
115.00000 6607.4
117.50000 6751.1
120.00000 6894.7
122.50000 7038.4
125.00000 7182
127.50000 7325.6
130.00000 7469.3
Stan