The ACL Race Series main bearing set for Chevrolet V8 396–454 ci engines is a narrowed-profile kit intended for high-demand race and performance builds. These mains provide controlled clearances and consistent rotating support under elevated loads. Use this set in engine builds where narrowed main bearings are specified to maintain crankshaft support and precise bearing geometry.

ACL Chev V8 396-402-427-454 Race Series (Narrowed) Engine Crankshaft Main Bearing Set