Hey guys. Wondering who is boosting L92's? How much are you throwing at these heads before they lift? I hear they have thin decks?
I am not a heads guy, what is the difference between thin and thick deck heads? Why does this make a difference?
The thicker deck, typically 5/8" (or thicker) on a lot of after market heads are stronger and less prone to flexing or distorting.
Thin deck, or most production OE heads which are 1/2" or less and not all that consistant in deck across the head. Will only handle so much cylinder pressure before they move and release the head gasket.
The other thing to keep in mind is the head bolt arrangement, production LS's are only 4 bolts per cylinder were the LSX and other after market blocks have 5 or more. This will play a big roll in what they can handle for cylinder pressure as well.
Hope that helps.
So your more likely to lift stock heads than aftermarket? I gave seen people run both heads with success. I am sure aftermark is more reliable though
A couple good hard 1/8th mile passes. But I agree, this is a dead horse.this subject has probably been covered 1000 times. over 700-750 hp they lift-this is assuming everything is correct. There will be guys that said they made 1000+ , but how long? 2 dyno pulls?
there is no free lunch on f/i engines.