Ok so i bought this 2001 Gmc s/b s/c with 4.8 4l60e and whatever rear these trucks come with.

Its got like 200k motor is beat.

My Goal is like 13.0 with the truck. Its got performance rebuilt 4l60e allready in it. The i was most likely thinking 4:10 Gears. I didnt wanna be much bigger than like 2600-3000 converter unless.

My engine is the issue. I dont know anything bout these motors. I how ever have a 1998 LS1 in the garage. I have HP tuner from my other car.

What would i need to get into the 13.0 range with the trans/rear/converter i mentioned and definetly what motor or is this motor capable of it.