Gear Vendor Quetion

[OLDBULL8]

For you to be at those rpms in overdrive with those tires, you must have 4.56 R&P? If no overdrive then you would have 3.31 R&P? Are you sure your speedometer is correct?

I have a ScanGage II that reads out RPM MPH MPG and Engine Load. Also a GPS.
They are all with in 1 MPH of each other. The ScanGage reads the same as the tach and speedo. Running in cruise.
What is R&P?

 

[snicklas]

Oldbull

Ring and Pinion I believe.... he feels you have a 4.56 rear instead of a 4.10......