408 build

Once again thanks for the reply’s, this is a big learning curve for me The pistons Hughes specified are icon forged -13cc dishes piston at zero deck with a fel pro race head gasket 4.180” x 0.39” also giving a cylinder pressure of 186psi
Cheers Mark
Comes out at 10.8 SCR so that part agrees with the earlier data.

Is the 186 psi cranking pressure computed or measured?

You do have a decent quench gap with that setup; that is good.