What is the purpose of the pMaxBlack coating on these bearings?

The pMaxBlack coating is designed to improve the durability of the bearing surface and reduce friction. This helps protect the bearing and the crankshaft, especially during engine break-in and under high-load conditions.

Why is this bearing set .001 inch undersize?

This set is .001 inch undersize because it is intended for use with crankshafts that have been machined down by that amount. This is common in engine rebuilding to correct wear or to achieve specific oil clearances.

What else might I need when installing these main bearings?

You will need to ensure your crankshaft journals are clean and within the specified tolerance for this .001 undersize bearing. It's also critical to use the correct assembly lube and follow the manufacturer's torque specifications for the main caps.

Specifications

Brand: King Engine Bearings
Part #: MB556XPNC001
UPC: 611500618260

King Engine Bearings Chevrolet 369-502 Gen IV/ V/ VI (Size .001) pMaxBlack Coated Main Bearing Set

Name: King Engine Bearings Chevrolet 369-502 Gen IV/ V/ VI (Size .001) pMaxBlack Coated Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-chevrolet-369-502-gen-iv-v-vi-size-001-t14-432471
Price: 185.77 USD
Availability: BackOrder

$185.77

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King Engine Bearings Gen IV/V/VI main bearing set with pMaxBlack coating for improved durability.

Key Features

This set is 0.001 inch undersize for machined crankshafts.
Features King's pMaxBlack coating for improved durability and reduced friction.
Constructed with a high-performance overlay and hardened steel backing.
Designed for Chevrolet Gen IV, V, and VI engines.
Helps maintain proper oil pressure in performance and rebuilt engines.

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About this part

Product Details

The pMaxBlack coating on these King Engine Bearings main bearings is a notable design choice, offering improved durability and reduced friction within your Chevrolet Gen IV, V, or VI engine. This specific set is sized .001 inch undersize, which is crucial for engines that have been previously machined or require a tighter clearance for optimal oil pressure. King is a well-known name in engine bearings, and this set is built to handle the demands of performance builds and restorations alike.

These main bearings are constructed with a high-performance overlay and a hardened steel backing, ensuring they can withstand the stresses of high-RPM operation and heavy loads. The pMaxBlack coating is designed to work with the bearing material to create a more robust surface that resists wear, especially during the critical break-in period. This means you can be more confident in the longevity of your engine's bottom end, whether you're rebuilding a classic or tuning a modern performance application.

When installing these bearings, it's important to ensure your crankshaft journals are clean and properly machined to the correct undersize. Always refer to the manufacturer's installation instructions for specific details regarding oil clearance and assembly procedures to get the best performance and longest life from your new King Engine Bearings.