So I went down to Schwartz Performance today to spec out my new LSX build. His shop is about 15 mins from my house...how cool is that?
Got a full tour of the shop and saw his latest toy: http://www.carcraft.com/featuredvehicles/ccrp_1002_1965_pontiac_tempest/index.html
He's a super nice guy and I learned a few things today about LSX's.
I figured I was going to spec out an LS3 based stroker, 427 likely, but he strongly advised against it. He explained how the pistons sit too far out of the hole at BDC for his liking. He showed me a 6.0 piston from a 1500 mile motor with a 4" stroke and it was obvious how much of the skirt sits out of the hole...not cool! So my options were to either have the block sleeved or go LS7 which doesnt have this problem. After a bit of talking about the possibility of an LS7 I told him I better not. Id be changing too much and its out of range of what I want to spend right now.
He offers a nice 555 HP LS3 that I am pretty sure I am going to go with now instead. That 555 is with a custom comp cam and a bump in compression. He doesnt touch the heads. He said he did a lot of experimentation with these heads and got great flow numbers but it never showed on the dyno. Apparently these motors dont need anymore head unless the cam is really crazy of course.
So if you're going to run L92's on a 6.2/6.0 it looks like you can leave em alone.
Got a full tour of the shop and saw his latest toy: http://www.carcraft.com/featuredvehicles/ccrp_1002_1965_pontiac_tempest/index.html
He's a super nice guy and I learned a few things today about LSX's.
I figured I was going to spec out an LS3 based stroker, 427 likely, but he strongly advised against it. He explained how the pistons sit too far out of the hole at BDC for his liking. He showed me a 6.0 piston from a 1500 mile motor with a 4" stroke and it was obvious how much of the skirt sits out of the hole...not cool! So my options were to either have the block sleeved or go LS7 which doesnt have this problem. After a bit of talking about the possibility of an LS7 I told him I better not. Id be changing too much and its out of range of what I want to spend right now.
He offers a nice 555 HP LS3 that I am pretty sure I am going to go with now instead. That 555 is with a custom comp cam and a bump in compression. He doesnt touch the heads. He said he did a lot of experimentation with these heads and got great flow numbers but it never showed on the dyno. Apparently these motors dont need anymore head unless the cam is really crazy of course.
So if you're going to run L92's on a 6.2/6.0 it looks like you can leave em alone.