The ACL .30mm oversized main bearing set is intended for Ford small-block V8s (255, 289, 302) spanning 1962–1998 where crank journals have been machined by 0.30mm. These bearings allow a rebuilt engine to regain correct journal diameter and oil clearances after machining, restoring bearing support and helping maintain reliable rotating assembly performance following a substantial undersize correction.

ACL 1962-1998 Ford Prod V8 255/289/302 .30mm Oversized Main Bearing Set