How far down from the deck are the pistons?
I thought it is pretty far,so you would have to mill the top of the block quite a bit therefore,making the deck surface thin & or weak?
If it's not too far,I would always recommend getting a zero deck or positve deck,or @ the very least,close to a zero deck.
It's all about squish/quench band etc.
It is part of the reason all the LS engines can run such a high compression ,positive deck.
Wonder if the 4200 has a positive deck?
EFY -diy?
MBHD
