I personally think they are to big on a 4.00 bore. They might run decent for the money, but you can certainly have something that would give you more power under the curve...

I think these would be a perfect match with your combo, no matter the turbo size.

http://www.trickflow.com/partdetail....t=TFS-3060T001

 

the L92s have a thin deck even for a stock head. If you go FI with them I would plan to keep boost in check. Even with good head studs, and good gaskets I would not push them over 15 psi. Plenty of people are making big power on the 317s that come on the 6.0s, just my .02, good luck on your build.

 

Thanks guys for every response! im kinda in a crappy spot if i choose diff heads i would have to sell my L92's then ship back the L92 intake and fuel rails! im only out 500$ on the L92's should i ship back all that stuff and try to sell heads and start with better ones? I might have jumped the gun on this build and just started buying stuff due to lack of patience lol, ive never had a boosted application and duno if i would even ever want to go more than 15#'s (yeah right!) we all know how that works, i figure by the time i have the L92's done i will have close to 2k in them why not spend the extra 500$ for something i can put more than 15#'s of boost to, does this sound about right? Thanks for all ure imput

 

If your already setup for the L92s then just run them. There are several guys getting good power out of them. If u lift one, then swap...

 

If you're considering big boost, sell what you have and buy some thick deck aftermarket heads and studs. No reason to mess up a set up LS3/L92 heads if you're shooting for boost over and above what they will handle. Put it together once and do it right. Re-do's suck.

 

Think about what gas you want to run. You won't be able to run 93 octane on more than 14 psi-ish without lots of meth injection. It just depends on your goals.

 

Great points! I believe ill stay at the breaking point of 14 psi due to all the other mods i would have to do to get past that......Meth...better heads....and other detnation preventatives! 14 psi should get me atleast 800 to the ground from all the research i have done i think!?! i wouldnt mind mixing a lil race fuel if it was an option even at 14#

 

Tune will have to be perfect to run 14 psi on pump gas.

 

Forget all these bad comments and do it l92s will get the job done and were running pump gas on a twin turbo 402 and still makjng 900 rwhp on l92s on 18# so slap em on brotha

 

Thats what I've been looking for! Haha thanks man I just wanted Some solid answers and everyone gave great aspects.... Thanks again guys I'm sticking with the heads I'll give ya updates when the truck gets the rearend setup done this week... Ladder bar and coil overs ftw!!