Quote Originally Posted by mean05 View Post
L92 heads have 72cc chambers and that the L92 heads have a very thin deck (thinnest of all LS heads) and not to deck them. They flow really well out of the box but at the cost of deck thickness. And depending on the setup and cam... the piston may have to be cut or else piston to valve slap will occur. Lot's of variables with these heads on some setups that make power

i dont know about the 6.2 but on a lq9 ( 4" bore ) to get my compression where i wanted it ( 11.1) i had my heads milled .015 then used a .040 gasket. virgil is correct when it comes to the overall setup, i do plan to spray a 150 shot probably at end of year or early next year right now with a few extra mods i have done i am putting down 470 to the wheels.. my future plans though would consist of a new cam, and the ls3 fast intake and bigmouth TB. and a little something else, just gotta see how it works out, my goal has always been 500 rwhp, and as close as i am now i feel i can achieve it.

anyone know exactually what the difference in thickness is?