L92 heads

[bangbangskeetskeet]

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

Of course you would post this while I was doing my research and typing that ^^^ out

[fullthrottle]

Lol that's some good numbers you came up with though. IMO don't deck ANY set of heads more than .010 especially under nitrous.

[mean05]

Lol that's some good numbers you came up with though. IMO don't deck ANY set of heads more than .010 especially under nitrous.

why would you say that?

[fullthrottle]

Just doesn't give you much room for error especially for a DD. Let's say heads gotta come off if a lifter goes bad then you gotta deck them again and find that they're super warped cuz they are already thin. Might as well junk them. Aren't nitrous motors more prone to electrolysis as well? Yet another reason I would be wary.

[bangbangskeetskeet]

why would you say that?

Wondering the same thing....

[skeet]

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?