Differences in crankshafts between auto vs stick?

[ScottH]

A friend is having a problem installing a pilot bearing in a pontiac 428 engine. Local parts stores tell him there is a difference in the crank shaft between those made for an automatic vs those made for a manual trans.

Can anyone confirm that this may be his problem? Basically after installing a bronze pilot bearing the manual input shaft will not go into the center hole (did prior to installing pilot bearing). The bearing went in the crank, but was REALLY tight from what he said.

Any info is greatly appreciated. Thanks.