H 2 GUY
I had 2 2000 HD 2500 4x4 x cab p/u 6 liter w/ 4sp auto and 3.73 gears.
I pulled a 14000# trailer w/ them.
The 6 liter motor is good pulling and over 5000rpm it is still pulling strong.
There is an entrance ramp onto I-71 that has a sharp turn at bottom of hill(20mph no run
)
it is fairly long grade and top it at 55mph+
.
If u get rpm up it really pulls but no match for my Duramax and allison.