since you have access to a 5.3 i would just swap that in and then get a tune
since you have access to a 5.3 i would just swap that in and then get a tune
put a 5.3L in it with cam, hardened pushrods, tune and longtube headers. THe 4.8L is anemic without a lot of work and with it's short stroke crank has a hard time making torque to pull hills even with an empty truck.
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
5.3 and 4:10s would be a good combo I bet.