dltriolo

i was just wandering how i could find out what kind of engine i have in my truck. i know it is a 5.9 L 24valve but did they make different kinds what is the output in horse power and torque. i keep hearing about the HO

dssimecek

HO came on the manual trasmission, SO on the automatic. Have the dealer print out the VIN number, service or parts can do it for you. Then you will have all the information.

displacedtexan

HO came with most 6 speeds (not all, you could get a 6 speed SO, but not a HO without a 6 speed) SO is autos, 5 speeds, and a few 6 speeds.

RustyJC

The HO didn't come out until the 2001 model year, and all the 2001 and 2002 HOs used the NV5600 6 speed. Yours should be an SO rated at 235 BHP/460 lb-ft.

Rusty

heimancowboy

Auto and 5 speed have 235hp 460 ft/lb tq

heimancowboy

auto and 5 speed have 235hp 460 ft/lb tq, the 6 speed has 245 hp 505 ft/lb tq. In 98 and 99 they had 215 hp and 420 ft/lb tq. Sorry for the double post

Tate

Early autos had the 215hp, 420 lb-ft.
All 5 speeds had 235hp, 460 lb-ft.
Early 6 speeds (99-00) had 235hp, 460 lb-ft.
Late 6 speeds (HO's) had 245hp, 505 lb-ft.

Check the data plate on the side of the timing case. It will tell you what engine you have.