Chris, what con rod are you using? I don't think your set up will be an issue.

Dave, I haven't heard much on the heavy piston due to vacations. Everyone should be back this week. I doubt I can add enough weight to make them sealed power/trw stock forged pistons. I know how customers are and you can't please everyone. These are intended to be an upgrade not a replacement. Likely the 400 piston would save enough weight that the engine could be internally balanced. That should be a big plus for a 400 stock stroke owner. Steel 383 crank is now an option too.

BTW Owner of the first set is very pleased with his engine.