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**68 C10 Driver** · 01-20-2021, 09:21 AM

My tire size is a 235 75 15 @ 28.25" height. Figured out the RPMs @70 MPH will be approximately 2675 if using a 3.23 rear end gears.

I think I can live with that.

01-20-2021, 09:21 AM	#14
68 C10 Driver Senior Member Join Date: Oct 2020 Location: Kathleen, GA Posts: 623	Re: Differential Gearing Question My tire size is a 235 75 15 @ 28.25" height. Figured out the RPMs @70 MPH will be approximately 2675 if using a 3.23 rear end gears. I think I can live with that.