273ci thoughts?

Slantsix64 said
Use The LA 318 Roller motor pistons they are taller then the other year pistons and they are flat tops

Sealed Power 526P or 526AP are 9.0:1 (1987 Dodge 318) Yes they are flat tops and would work great with those closed chamber 302 heads that came on them. 920 heads or a 1966-67 273 head would work well.