semi / tractor-trailor hp/tq ratings?

hey guys .. its been bugging me for a while now, and i cannot find any tq #'s on Peterbilt's web-site .. but they have the different models and the different motor options .. they have the

[FONT=Verdana,Geneva,Lucida,sans-serif]Caterpillar[/FONT][FONT=Verdana,Geneva,Lucida,sans-serif]C11[/FONT][FONT=Verdana,Geneva,Lucida,sans-serif]305-370 HP[/FONT] [FONT=Verdana,Geneva,Lucida,sans-serif]C13[/FONT][FONT=Verdana,Geneva,Lucida,sans-serif]335-430 HP[/FONT][FONT=Verdana,Geneva,Lucida,sans-serif] [/FONT][FONT=Verdana,Geneva,Lucida,sans-serif] [/FONT] [FONT=Verdana,Geneva,Lucida,sans-serif] [/FONT][FONT=Verdana,Geneva,Lucida,sans-serif]C15[/FONT][FONT=Verdana,Geneva,Lucida,sans-serif]435-550 HP[/FONT][FONT=Verdana,Geneva,Lucida,sans-serif] [/FONT][FONT=Verdana,Geneva,Lucida,sans-serif] [/FONT] [FONT=Verdana,Geneva,Lucida,sans-serif]Cummins[/FONT][FONT=Verdana,Geneva,Lucida,sans-serif]ISX[/FONT][FONT=Verdana,Geneva,Lucida,sans-serif]400-565 HP[/FONT]


how much torque do you think these motors are putting out?

 

Anywhere from 1,150 to about 1,850.

 

You can go to the engine manufactuer and get the specs on those motors. My old school 3406B is 425hp/ 1450 torque.

 

425hp...that's it?:stir:

 

4 and a quarter B model? I had one in a 94 Pete I used to drive, would do triple digits. Don't underestimate those early CATs. But since your just stirrin the pot I figured I would bite and give my $.02.

 

You got that right, mine is a 2100 rpm motor with the heavy duty valve springs etc.