Seller notes

KING PERFORMANCE BEARINGS This listing is for a new set of King Performance HP-series main bearings for Chevrolet 400ci small block V-8 engines. P/N MB509HP (standard or oversize). This main bearing set has grooved upper shells. The HP-series main bearings have greater eccentricity for superior oiling at high rpm, and a chamfered surface for large radii crankshafts. HP-Series bearings also feature large, chamfered oil holes—and are available in 1/2 grooving for improved oiling to withstand hig...

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