ACL **Coated** Chevrolet V8 396-402-427-454 Race Series Engine Crankshaft Main Bearing Set

Already rebuilding your Chevrolet V8? This ACL Race Series crankshaft main bearing set is a solid option for your 396, 402, 427, or 454 big-block. These bearings are designed to handle the demands of a performance engine build, offering improved durability and consistent performance. The 'HC' in the part number signifies a special coating that helps reduce friction and wear, especially during the critical break-in period and under high-stress conditions. This set is specifically sized at 0.010 inches undersize, meaning it's intended for crankshafts that have been machined down by that amount to clean up any imperfections or to achieve a specific clearance.

ACL has been making engine bearings for a long time, and this Race Series set uses well-built materials and advanced manufacturing techniques to ensure they hold up. The coating applied to these bearings is a key feature, providing an extra layer of protection that can make a notable difference in engine longevity, particularly when you're pushing your engine harder than stock. They are designed to fit right into the factory main bearing locations on a wide range of Chevrolet V8 applications from the mid-60s through the mid-70s, making them a popular choice for engine builders working on classic muscle cars and trucks.

When you're putting an engine back together, getting the bearing clearances just right is crucial. Make sure your crankshaft has been properly measured and machined to the 0.010 inch undersize specification before installing these bearings. It's also a good idea to have all the necessary assembly lube on hand to ensure proper lubrication during initial startup.