Need some help finding compression

[thebigo432]

Im ordering the pistons that i will be using in my 383 and I need help finding compression.

The Deck height of the block is standard height, the bore is 4.030, stroke a 3.75, and 64 cc Vortec heads.

I know that i need to find a piston with a compression height of 1.425 but i need help finding out what the compression will be and what recomendations you have for pistons with compression around 9.5 to 1. The pistons i think i have chosen are
http://store.summitracing.com/partdetail.asp?part=STL-H859CP30&autoview=sku and i dont know what the compression will be with this setup

Thanks

[Old88]

with the piston .025" below the deck (based on a 9.025 stock deck height)
with a .040" head gasket

a -12cc dish puts you at 9.7572:1 comp ratio

http://www.race-cars.net/calculators/compression_calculator.html