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This ACL Race Series main bearing set is specified for Chevy V8 4.8/5.3/5.7/6.0L engines and listed as a standard-size main bearing set for GM LS Gen III–IV blocks. The product description notes a 270-degree oil groove in the main bearings and identifies the kit as the correct standard replacement for the stated LS engine families without making claims beyond fitment and bearing groove style.
ACL Chevy V8 4.8/5.3/5.7/6.0L Race Series Standard Size Main Bearing Set
