L-72...AMA specs NEEDED!!!!

[Rowdy Rat]

Rob,

I'm told that the GM #330860 head gasket is still available with a current list price of $12.44/each. This gasket is a steel shim-type gasket which is nearly identical to the original gasket, GM #3863199. I'd bet the farm that the LS-6 found in the 1970 Chevelle/El Camino would have used the same gasket. GM also lists a Fel-Pro gasket which is far superior to the original steel shim gasket in sealing ability (with a corresponding high performance price of @ $80/each - my guess is much cheaper from Fel-Pro). This gasket is a composition type and has a greater compressed thickness and as such, is unlike the original. I really doubt that this would cause any problems during tech though(a call to Dan or Bob would most likely confirm this if you go this route).

BRC Pistons has a handy compression ratio calculator on their web site that might prove helpful to you as well.

Regards,

Stan Falenski