King Engine Bearings MB5650SI010 Main Bearing Set Ford Undersize - 429 460 010

The King Engine Bearings MB5650SI010 is a complete main bearing set designed for Ford 370, 429, and 460 cubic inch big block V8 engines. This set features SI-Series silicon-aluminum bi-metal construction, engineered specifically for aftermarket gasoline engine rebuilding and performance applications with OE crankshafts. The .010" undersize specification indicates these bearings are thicker than standard to accommodate crankshafts that have been turned down .010" during machining or reconditioning.

SI-Series Technology:

• Silicon-aluminum bi-metal construction on high-strength steel backing
• Engineered for OE replacement and moderate performance applications
• Compatible with original equipment crankshafts
• Suitable for gasoline and diesel engine rebuilds
• .010" undersize for use with reground crankshafts

Application:

• Ford 370, 429, and 460 cubic inch big block engines
• 16-valve OHV configurations
• Complete main bearing set for full engine rebuild

King Engine Bearings are manufactured to OE specifications with precision tolerances, providing reliable performance for stock rebuilds and street performance applications. The SI-Series represents King's solution for professional engine rebuilders seeking quality replacement bearings that deliver durability and proper oil clearances with factory or reground crankshafts.