VeryWhiteDevil

iTrader: (9)

I plan on running GM gaskets and I know due to running the larger heads on the 346 that you are supposed to run the larger head gaskets. so, what is the best option here?? LS2, LS3 or LS9 head gaskets with cost not being the factor..

Burken01

iTrader: (88)

Go with a gasket who's bore is .030 more than the head bore..

Ls9 is overkill @ 4.100 though it would work as well, mainly it's used for FI since its 7 layers

I'm using 4.030 bore cometics on my 3.906 iron Ls

redtan

iTrader: (5)

Cometic 0.040 for better quench