ACL Race Series Main Bearings

This main bearing set is offered with an additional lower thrust shell compared to the OEM main set. This gives the user the option to: 1. Fit the set with both upper and lower thrust shells to obtain a 360 degree thrust set-up. 2. Fit the upper thrust shell with a lower plain shell to obtain a 180 degree thrust set-up. ACL Chevy V8 LT1/LT4/L86 Race Series Standard Size High Performance Main Bearing Set GM LT V8 Main Sets 5M7292H / 5M7292HX Discard the spare lower thrust shell. Chevrolet 376ci (6.2L) LT4 V8 OHV 2v Discard the spare lower plain shell. GM LT1 6.2L mains