Bob V said:But the Dmaxs with sticks have less HP from the factory. IMHO the reason some of the auto have higher HP or tow ratings is that the computer can control the shift points AND the fueling at the shift points, softens the load on the drive train.
A big auto transmission such as the Allison takes 45-50 hp to operate according to some of the aftermarket transmission builders. Compared to 20-25 hp loss through a manual transmission the DMAX needs more grunt just to operate the Allison... ... JIM