Technical Hemi help

Using 392 pistons may give more compression than the 354 pistons, but he won't get the advertised C/R that comes on the 392 pistons used in a 392. Of course he hasn't said what the advertised C/R of the 392 pistons was. So right now we're guessing on how he came up with 10.3 sounded like he used 10:1 392 pistons & figured the C/R with the smaller 354 chambers w/o considering the shorter stroke.

 

Thanks guys really appreciate the input !