Super duty 10 speed gear ratios
Very similar to the 1/2 ton ratios. They are probably all excellent but my personal preference is that they would have left reverse as a higher speed. I think it was 1:-3.4 in the 6 speed Super Dut...
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All I could afford wrote:
Even more torque multiplication available from the torque converter. How much trucks have changed in the the last 20 years
The torque converter can double the torque output of the engine at stall speed but I'm not sure what the engine torque is at stall. By 1600 rpm there might not be much or any multiplication taking place through the torque converter.
You don't even have to go back 20 years to see how huge the difference is in low gear rear axle torque. In 2007 Ram was still using the 48re transmission. The Cummins was detuned to 570 lb ft at the flywheel to protect the transmission. (The programming allowed higher torque output at times to account for power being consumed by accessories on the front of the engine). Anyway the 1st gear ratio of the 48re was 2.45:1.
570 x 2.45 x 4.10 (final drive) gave an output of 5725 lb ft .... disregarding driveline losses.
