This morning I did a couple mock-ups and trial fits on my back-up engine. This was with Indy 440-1 rockers and Comp 0.180" offset lifters. It didn't take long with a die grinder and carbide burr to clearance those 4 casting bumps, but it did take time to do the trial fits to figure out where it needed to be done, and to make sure it clears.

I don't plan on running a roller cam, or offset lifters, in this engine, but while the block is bare... now is the time to do it.