Optional to MB 557SI (Race bearings, Bi-metal Alecular)
King Small Block Chevy BI-Metal Main Bearing Set
For GENERAL MOTORS 262, 267, 302, 307, 327, 350
General Motors 262, 267, 302, 307, 327, 350
Engine Crankshaft Main Bearing Set
MAIN BEARING SET
Engine Bearing
1/2 groove