LS1Tech.com - GM LS Performance Forum

My son has a Stage 3 sloppy cam he installed in his LQ9 6.0L. The valves are tapping the pistons enough to make a noise but have not bent the valves. ...

So I'm at the moment trying to assemble my heads. I have two different valve spring compressors. 1 is a old Sears Unit 1's a relatively new one from N...

Frank I have yet to try your D4 overrun mod. I've been really wanting too but I continue to use the Sonnax version for the reason you mentioned. I r...

OK guys I’m trying to sort out my catch can situation on my 383 build Here is my situation and my question.. I’m running an elite engine...

Might want to check out Classic Performance Parts for exhaust manifolds. I don't know if they make factory LS1 but their LS3 versions claim to be with...

Yall are boring now.

Had the car for 5 years; the ex thought it was a great idea to kiss it with the back of an axe. So, I've been doing some research and reading for...