New Ram/Cummins vs GM/Duramax on the IKE

ShinerBock wrote:

Bigfoot affair wrote:


Allison 10L100

1st- 4.54 x 3.42 x 910= 14,129 lb-ft
2nd- 2.86 x 3.42 x 910= 8,900 lb-ft
3rd- 2.06 x 3.42 x 910= 6,411 lb-ft
4th- 1.72 x 3.42 x 910= 5,353 lb-ft
5th- 1.48 x 3.42 x 910= 4,606 lb-ft
6th- 1.26 x 3.42 x 910= 3,921 lb-ft
7th- 1.00 x 3.42 x 910= 3,112 lb-ft
8th- .85 x 3.42 x 910= 2,645 lb-ft
9th- .68 x 3.42 x 910= 2,116 lb-ft
10th- .63 x 3.42 x 910= 1,960 lb-ft

Thank you for the correct gear ratios. I have been trying to find them to no avail. I still seems that 1-6 are underdrive, 7th is direct, and 8-10 are overdrive. So even with a 3.42 rear end the GM was sending more torque to the wheels than a Ram 6-speed with a 4.10 rear end.

You're welcome. I found them here-> 2020 Silverado press release