cgworth

iTrader: (11)

whats a good head gasket to use on my LT1 383 stroker , i plan on shooting 150 shot of nitrous, heads and block are NOT decked

several suggestions and part numbers would be apreciated

flat top pistons and stock heads with 5 angle valve job 1.6 rr gm 847 cam

i would also like to be between 10.5 to1 to 11 to 1 compression ratio

96capricemgr

iTrader: (1)

piston and chamber specs?
Since you are going to have horrible quench I think most of us would like to tell you THIN gaskets but before we do that we should know some more specs so we do not endup causing compression to get too far out of hand.

cgworth

iTrader: (11)

bored .30 and stock head with 5 angle valve job, flat top pistons i know i know but i didnt have enough to get the heads ported , i will have to do that later, i would also like to be between 10.5 to1 to 11 to 1 compression ratio

cgworth

iTrader: (11)

ttt..

cgworth

iTrader: (11)

ttt..

1997bird

iTrader: (2)

Mr Gasket CO. part # 5716 is a pair of Ultra Seal head gaskets that are good to 12.1:1 compression. They have a 4.110" bore dia and have a 0.026" compressed thickness.
As for you compression ratio its hard to tell. I have had stock casting "327" 2 bolt LT1 blocks with varrying deck heights on all four corners. Personally I would not even put the motor together until you have had it decked (locally it only costs $175). Like 96capricemgr stated your quench is going absolutely horrible.