ACL 1967-1998 Chevy V8 267/305/327/350 .30mm Trimetal Oversized Main Bearing Set

Already running a built Chevy V8? This set of ACL main bearings is the next piece of the puzzle for a strong bottom end. These are specifically sized at 0.030 inches undersize, meaning they're meant to be used with a crankshaft that has been machined down by that amount. They fit a wide range of Chevy V8s, including the 267, 305, 327, and 350 cubic inch engines found in many classic Camaros, C10s, and Impalas from the 60s and 70s.

ACL uses a trimetal construction for these bearings. This means they're built with multiple layers of different materials, which helps them handle the high loads and temperatures found in a performance engine. The trimetal design offers good embeddability for small debris and excellent conformability to the crankshaft journal, helping to maintain oil film and reduce wear. When you're rebuilding or modifying a classic Chevy V8, using bearings that are properly sized and well-built is crucial for longevity and performance.

When installing these bearings, make sure your crankshaft journals have been professionally machined and polished to the correct 0.030 inch undersize. Cleanliness is also key during installation to prevent any contamination that could damage the new bearings or the crankshaft. Refer to your engine's service manual for detailed installation procedures and torque specifications.