4.27 is a good compromise on a differential ratio. The '48 has the 5.38 behind the F-134 engine and at the 2200 RPM happy place, it wants to run 42 MPH.
It will pull a train, just not very fast!
4.27 is a good compromise on a differential ratio. The '48 has the 5.38 behind the F-134 engine and at the 2200 RPM happy place, it wants to run 42 MPH.
It will pull a train, just not very fast!
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