Stock 72 318 power gains

Used 9.2:1 Flat top pistons with full floating rods came in the '89 to '91 318 truck engines. They also have the 302 Closed Chamber heads.

Pistons sit .040 ths in the hole.

Can use those pistons In your build.

View attachment 1715919009
Don't the pre '73 318 / 340 rods have floating wrist pins too?