What does the '030' in the part number mean?

The '030' indicates that these bearings are 0.030 inches undersize. This means they are designed to be used with a crankshaft that has been machined down by 0.030 inches during an engine rebuild.

What is the material of these bearings?

These bearings are made from a bi-metal aluminum material. They also feature a lead-free composite that is designed to be environmentally safe while maintaining high performance.

Are these bearings suitable for a stock rebuild?

These bearings are 0.030 inch undersize, which means they are intended for a crankshaft that has been machined to that specification. If your crankshaft is still at standard size, you would need a standard size bearing set.

Specifications

Brand: King Engine Bearings
Part #: MB556HPN030
UPC: 611500618123

King Engine Bearings Chevrolet 396-502 Gen IV/V/VI Main Bearing Set (Size 030)

Name: King Engine Bearings Chevrolet 396-502 Gen IV/V/VI Main Bearing Set (Size 030)
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-chevrolet-396-502-gen-iv-v-vi-main-bea-t14-429662
Price: 135.01 USD
Availability: BackOrder

$135.01

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King Engine Bearings Chevrolet 396-502 Gen IV/V/VI Main Bearing Set (Size 030). A well-built main bearing set for performance engines.

Key Features

Fits 108+ vehicle make/model combinations.
Main bearing set for Chevrolet 396-502 Gen IV, V, and VI engines.
Bearings are 0.030 inch undersize for use with machined crankshafts.
Constructed with a bi-metal aluminum material for durability.
Features a lead-free composite that is environmentally safe.
Designed for high performance applications.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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About this part

Product Details

Built with a bi-metal aluminum material, this King Engine Bearings main bearing set is designed for Chevrolet 396-502 Gen IV, V, and VI engines. These bearings are a 0.030 inch undersize, meaning they are intended for crankshafts that have been machined down by that amount during a rebuild. King has been specializing in engine bearings since 1960, focusing on supplying well-built components for a range of applications.

This particular set uses a lead-free composite that is environmentally safe, while still maintaining high performance characteristics. The bi-metal aluminum construction offers a solid foundation for your engine's rotating assembly. These bearings fit a wide variety of Chevrolet vehicles, including models like the C10 Pickup, Camaro, and Corvette, spanning several decades of production.