My new (in the garage) ls1 block, balance the rotating assembly, deck the ls1 heads to 63cc with stage 1 w/2.02/1.57 valves for about 10.8:1 compression, cam(not sure on profile), swap what I can from my 5.3L: my hamm headers, truck intake manifold, tuning, my K&N intake, ASP pulley, and maybe stage 1 my truck heads and swap em instead of ls1 heads (maybe 11:1 compression?). What kind of #'s can I expect with this setup in my truck? This was all planned for the '01, but will now go in the '02.

Thought about the 6.0L, but wanted to shave a little weight since I'm not wanting extreme #'s.

<small>[ July 31, 2002, 03:44 PM: Message edited by: red53gmc ]</small>

 

I went aluminum too with my new motor build. I am much more confident with the new sleeving methods that are now being used in the LS1 motors. (I'm looking to build a 388 ci 4.080x3.710 block)

The weight savings are a plus with our poor weight distribution.

The cam selection will ultimately determine the drivability and total power potential of that motor but 11:1 + CR would be desirable.

Some S1 heads and cam 5.7L with 11:1 CR are putting down impressive 360-380 RWHP with minimal bolt-ons and 400+ with the works.

Richard

 

Sounds like a nice plan Paul! If I ever purchased a 5.3l truck, I planned on doing the same swap (or a 6.0l). Good luck with it and let me know if you have any questions regarding cam selection,etc.

Jason