Piston ID

headsbikesmopars said
Norm, that is latteral miss-alignment. See if the manifold will move front to back to correct this. That's quit a bit you have there. That isn't good. Even .020 needs correcting. It causes turbulence and inequal fuel distribution problems. floor looks close. Good luck, Terry.

Problem is, someone took a grinder to the intake manifold runners, from about 2 1/2" inside the runner and tapered out the edge. Once I get the engine all apart, I'll bolt the intake to the head without the valves in, and see if it's alignment, or to much metal ground away.