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Reference Information

Main Bearings, M Series, 1/2 Groove, Standard Size, B-2, Chevy, 454/481X, Set of 5

Clevite's M-Series main bearings are special-purpose items. They have a nominal 0.006 in. thick babbit layer on hardened-steel backings and are intended for engines that have severe crankshaft deflections. They have enlarged chamfers and, for some applications, both the oil holes and the oil grooves are enlarged.