MAIN RING CHEAT
On some blocks that you may not have Main Bar Rings for there is often one that is very close to one you do have. I simply make precision spacers from shim stock and run them through slip roll to make them round. For example, the 400 Chevy ring plus a .020” thick shim makes up the .0394” bore difference you need for a 392 Chrysler Hemi. On some, they’re so close that a single wrap of scotch or packing tape is dead on. Either way, just lay the bar in with the rings and spacers and snug them down.
North Branch, MN