factory cummins/allison
#1
#3
#9
I was wrong. They have a double OD, 5th and 6th gear in the latest offerings. I'm not sure how far back they go though (which model years and whether the newest models are available in salvage yards).
Here is Allison's spec sheet:
http://www.allisontransmission.com/s...t=SA3742EN.pdf
None of these are rated to take more than around 300 hp or 600 ft/lbs torque. In other words, they are almost bullet proof in a stock application, even one that is moving 30K pounds, but not for higher hp figures.
Here is Allison's spec sheet:
http://www.allisontransmission.com/s...t=SA3742EN.pdf
None of these are rated to take more than around 300 hp or 600 ft/lbs torque. In other words, they are almost bullet proof in a stock application, even one that is moving 30K pounds, but not for higher hp figures.