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.

Ron Flood
Cedar Machine
North Branch, MN
April, 2020