Large Journal SBC MS909H  

NOTE ALL: H-Series Performance, Grooved Upper Halves Plain Lower Halves.

Clevite Main Bearing Set part number: MS909H (Standard)

These bearings are identified by a letter H in the part number suffix. Part numbering is based on the same core number as the standard passenger car parts for the same application. These bearings were developed primarily for use in NASCAR type racing, but are suitable for all types of competition engines. 

H series bearings have a medium level of eccentricity, high crush, and main bearings have a hardened steel back and thin overlay. These bearings also have enlarged chamfers for greater crankshaft fillet clearance and are made without flash plating for better seating.