[doubeys_nova]

If i ever get around to changing to 4.10 gears it might feel a little more sluggish but still with 4.10 gear sets it shouldnt take much engine to pull the truck around.

With the 4.88 gear sets I have had it loaded heavy and pulled car trailers with cars on them with ease.

Empty, the truck gets it. If you compare the power on a stock truck 4.8L to even a stock truck 454 of the 80's the 4.8 is going to kill it. the engine management on these newer engines is by far superior to old carb/distributor set ups. These little guys sit around the 300 mark hp and lb/ft with a tuned power curve.

When using the 4.8L, adapt a gear set the will put you at a little higher rpm than if you run a 5.3/6.0. i would run 3.73's in 33 and down tire size and 4.10 in 35 and up tire sizes but i have overdrive too. 35's without overdrive either mean really high highway rpm's or a toasted transmission. i had a TH350/3.08 gear set combo initially with my 35's and that trans lasted a whole 6 months/10k miles before all forward gears were gone. i switched to 4.88's and a K case 700R4 and drove it for over a year(and i dont baby it) with out a slip or bad shift still.