340 build

To avoid confusion with the on-line calculator, do this:
- Just enter the valve relief in cc's as the piston manufacturer lists it (7.6 cc's in this case... which seems high but use what the mfr lists or what you measure... IF you measure the valve reliefs, which I don't.).
- You DON'T take off the above deck-volume of the pistons tops sticking above the deck from the valve relief; the math of the calculators do this automatically. Just enter the deck height of the piston, which will be a - number if it is a flat top sticking above the deck.

Numbers to use:
Bore: 4.100
Stroke: 3.31
Deck height: -.018 for the Wallace calculator or the Kelly calculator (for your TRW piston's standard deck height)
Valve relief: 7.6 cc
Gasket hole: 4.17" for Felpro 8553PT
(Gasket hole diameter will be as you order the head gasket made if you use Cometics; that is a custom order parameter in increments of .025" IIRC.)
Gasket thicknesses:
Felpro 8553PT = .051"
Felpro 1008 = .039
Mar Gasket 1121G = .028"
Cometic = thickness as ordered; increments are .005" in the .025' to .100" order range IIRC

FYI, I get 10.49 with both the Wallace and Kelley calculators for the above parameters.