What does the STDX sizing mean for these bearings?

STDX sizing indicates that these bearings are 0.0005 inches undersize on the main diameter compared to a standard size bearing. This is often used when machining tolerances are very tight or a slightly tighter oil clearance is desired.

Are these bearings suitable for a stock engine rebuild?

While the pMaxBlack coating and STDX sizing are beneficial for durability and oil control, they are particularly well-suited for performance applications. For a stock rebuild, it's always best to consult with your engine builder or refer to the manufacturer's specifications for the most appropriate bearing size and type.

Specifications

Brand: King Engine Bearings
Part #: CR8057XPNSTDX
UPC: 611500612299

King Engine Bearings GM 6.2 - LT1/LT4 Gen V (Size STDX) pMaxBlack Coated Connecting Rod Bearing Set

Name: King Engine Bearings GM 6.2 - LT1/LT4 Gen V (Size STDX) pMaxBlack Coated Connecting Rod Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-gm-6-2-lt1-lt4-gen-v-size-stdx-pmaxbla-t14-432372
Price: 131.62 USD
Availability: BackOrder

$131.62

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King Engine Bearings rod bearing set for GM 6.2L LT1/LT4 Gen V. Features pMaxBlack coating for improved durability.

Key Features

Fits GM 6.2L LT1 and LT4 Gen V engines.
STDX size is 0.0005 inches undersize on the main diameter.
Features King's pMaxBlack coating for improved wear resistance and durability.
Designed to help maintain oil pressure in demanding applications.
Well-built connecting rod bearing set from King Engine Bearings.

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About this part

Product Details

This is a set of King Engine Bearings connecting rod bearings for GM 6.2L LT1 and LT4 Gen V engines. These bearings are specifically sized STDX, which means they are 0.0005 inches undersize on the main diameter compared to standard size. The pMaxBlack coating is a unique feature designed to offer improved wear resistance and durability, especially in high-performance applications where oil film strength can be a concern.

King Engine Bearings is known for making well-built engine components, and this set is no exception. The STDX sizing is often used when a block or crank has been machined to a very tight tolerance or when a slightly tighter oil clearance is desired for better oil pressure control. The pMaxBlack coating is a dry-film lubricant that helps protect the bearing surface during initial startup and under extreme operating conditions, reducing friction and wear.