Originally Posted by EdPruss
Jack up one wheel, count driveshaft revolutions vs. axle revolutions to get axle ratio.

Ed
Don't forget to allow for the fact that only one wheel is turning. The spider gears in the differential will cause the driveshaft to turn only half as many turns as if both wheels were turning together.

Kevin
1951 Chevy 3100 work truck
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1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.