Problem number two: the nose of our 168-tooth-pattern starter was too large to fit into the recess in the bellhousing. Through a stroke of luck, we just happened to have a couple of extra Chevy starters in the garage, including this large-pattern unit with a cast-iron nose from a ’72 Chevy truck with a big-block. Although both have the staggered bolt pattern, the size of the nose differs between the aluminum and cast-iron versions. Until this moment we had no idea there were more than two Chevy starter variations, and to be perfectly honest, we still don’t know the specifics of the various applications. We’re just glad we had the right one to solve this problem. Problem number three: the cast-iron starter uses odd-length mounting bolts, which we’d lost, and we had to make four trips to parts stores before finally ending up at the local Chevy dealer to get the right ones.