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The ACL Race Series main bearing set for GM LT V8 engines (LT1/LT4/L86) in .001 oversize includes an extra lower thrust shell compared to OEM sets. That gives builders the option of a full 360-degree thrust configuration or a 180-degree setup by mixing upper and lower shells. It's intended as a high-performance, direct-replacement main bearing kit for LT V8 rebuilds.
ACL Chevy V8 LT1/LT4/L86 Race Series .001 Oversized High Performance Main Bearing Set
