Quote:
Originally posted by Duke2.6
The above relationship may be rearranged to solve for axle ratio if you know the OE tire's revs per mile and have a good value for revs at any speed.
For top gear the transmission ratio is 1:1 for automatics and 0.80:1 for M103 five-speeds.
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what complicates this for an automatic is that you need to be sure that the torque converter is locked up before taking any measurements.