Ah nice. what year? I'm running a 98 ls1 block. I'm looking to make 900rwhp but the shop(sound perormance, out of chicago) warned me about lifting the heads. Ive heard 2 sides, saying you can lift the heads around that and I've heard about pep running more then that. I was wonder how it worked out for you?? thanks
Stock 5.7 aluminum.
What block are you running??
