Ls1 h/c motor
 

2000 ls1 70k miles has etp ported 5.3 heads gained 40 rwhp with these. 231/237 tsp cam 598 598. ported tsp oil pump ls2 timing chain hardened pushrods etc made 422 rwhp 380+ rwtq on a rich tune that needed to be adjusted due to a new tb. that was through a ls6 intake ported stock tb and a 12 bolt and 6 speed with 4:11s went 11.4 in my car. $3000obo