ACL Main Bearing Set, Race Series, 0.001" Undersize, Small Block Chevy

ACL race series engine main bearings are designed for high performance race engines. ACL race bearings unique design, metallurgy and engineering have come together to deliver the best high performance race bearing your engine can depend on. ACL race engine bearings feature Trimetal lead, tin, copper and nickel for superior strength and seizure resistance. ACL race bearings are identified by the suffix H