What does the '+.010' in the product description mean for the housing bore?

The '+.010' indicates that this main bearing set is designed for engine blocks where the main bearing housing bore has been machined to be 0.010 inches larger than the factory specification. This is common when rebuilding an engine to true up worn bores or to accommodate specific bearing clearances.

Are these bearings suitable for high-performance or racing applications?

These bearings feature a lead-free composite material ideal for medium-load engines. For extreme high-performance or racing applications with significantly higher loads, it's always best to consult King Engine Bearings' specific product lines designed for those demanding conditions.

What is the benefit of a bi-metal aluminum material for main bearings?

Bi-metal construction typically involves a steel backing for strength and a softer overlay material, like aluminum alloy in this case, for good conformability and embeddability. This combination helps the bearing adapt to the crankshaft journal and handle the loads effectively.

Specifications

Brand: King Engine Bearings
Part #: MB5766SI
UPC: 611500582769

King Engine Bearings GM LS1/2/4/6 (Housing Bore +.010) (Size STD) Main Bearing Set

Name: King Engine Bearings GM LS1/2/4/6 (Housing Bore +.010) (Size STD) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-gm-ls1-2-4-6-housing-bore-010-size-std-t14-45755
Price: 156.95 USD
Availability: BackOrder

$156.95

On Backorder

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King Engine Bearings main bearing set MB5766SI for GM LS engines. Features lead-free composite and bi-metal aluminum.

Key Features

Fits a wide range of GM LS engines, including those in Chevrolet Corvette, Silverado 1500, and Cadillac CTS models.
Features a lead-free, environmentally safe composite material suitable for medium-load engines.
Constructed with a bi-metal aluminum material for durability.
Main bearing set is sized for a housing bore that is 0.010 inches oversize.
Bearings are standard size for the specified housing bore.
Manufactured by King Engine Bearings, specialists in engine bearings since 1960.

⚠️ 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 lead-free, environmentally safe composite material, this main bearing set from King Engine Bearings is a solid option for medium-load GM LS engines. The bi-metal aluminum construction offers a well-built foundation for your engine's rotating assembly. This set is specifically sized for a housing bore that is 0.010 inches oversize, and the bearings themselves are standard size, designed to fit engines like those found in the Chevrolet Corvette (1997-2007), Chevrolet Silverado 1500 (1999-2013), and Cadillac CTS (2004-2007), among many others.

King Engine Bearings has focused on making high-quality bearings since 1960. This specialization means they understand the critical role main bearings play in engine longevity and performance. The lead-free composite material is chosen for its compatibility with modern engine oils and its ability to handle moderate loads without premature wear. When rebuilding or repairing your GM LS engine, choosing a bearing set designed for specific load conditions and material properties can make a notable difference in the overall health and lifespan of your engine.