New Ram/Cummins vs GM/Duramax on the IKE

RCMAN46 wrote:


The gear ratios you used are for the GM 10L80.

I have doubts that the GM 10L1000 will have the same ratios. I base this on the statement in one of the GM videos that you will be able to skip 1st gear when running with no load. This implies a much lower first gear than 4.70 with the 3.42 rear gear.

I have not been able to find published gear ratios for the 10L1000. I suspect they may be close to the Allison TC10.

You are correct. I want back to the GM news letter those numbers came from and it was the gasser 10 speed.