ACL Race Series connecting rod bearing set for GM Gen V LT1 6.2L is offered in a .50mm (0.020") undersize to match crankshafts requiring that dimension. These .020" undersize bearings are intended for LT1/LT4/L86 Gen V V8 engines where machining has produced the stated undersize journal diameter, providing the necessary bearing thickness for correct oil clearance.
ACL Chevrolet V8 6.2L LT1/LT4/L86 (Gen V) Race Series .020 Rod Bearing Set