stock trans

[Bri04]

Does anybody know how much HP the stock tran will take?

[treyhope]

16,000hp








but seriously need some more info. like year of truck its in, 5 or 6 speed. the 6 speeds are stronger stock than the 5 speeds

[Bri04]

Mybad I got an 08 6 speed

[Crafty1]

Its a matter of torque, not HP. Horsepower is torque times RPM. The trans doesn't really care what speed you make the twisting force at with the exception of heat in the clutches. Contrary to what Ford says in their commercials, torque is not power, its twisting force. It does not matter how quickly its applied which is where power differs.

All that said, the two limitations if you up the torque by more than 80-90 lb-ft in the 2006-2010 Allison are the TCC and range clutches. The latter can be addressed by a TG Jr kit. The other by running a 2011- LML torque converter.