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King SI-Series Main Bearings MB 557SI
Blanking plugs for superseal connector
Must use 15" or larger rims
they feature full CNC intake ports and chambered square exhaust ports
If you are drum/drum you will also need a metering valve
KING MAIN BEARINGS .020 SBC Front Brake Conversion Kit King SI-Series Main Bearings MBKing SI Series Main Bearings MB 557SI 020 Main Bearings, 1 2 Groove, . 020 in. Crankshaft Undersize, Bi metal, Silicon Aluminum, Chevy, Small Block, Set of 5 King SI Series main bearings are recommended for OE applications. These replacement bearings are designed for aftermarket gasoline or diesel engine rebuildingand performance engines with factory crankshafts. The bearings have an improved crankshaft finish for reducing microscopic ferrite peaks on
