Building a 46

[MattMan400ex]

Wanting to upgrade the old 400 to a 416 with high com piston and stage 2 hot cam. any help would be great any pros cons and what is the hishest comp piston i can run on pump gas???

Thank ya

[mineralgrey01gt]

11:1 i think. I did the same exact thing you are wanting to do. Im satisfied for now with it