What does the '+0.020' sizing mean for these main bearings?

The '+0.020' indicates that these bearings are larger than standard size by 0.020 inches. This is necessary when the engine's crankshaft has been machined down by 0.020 inches during a rebuild to remove wear or damage.

What is the advantage of the harder overlay on these bearings?

The high-performance overlay is 30% harder than standard, which significantly improves the bearing's resistance to wear and its ability to handle higher loads. This is beneficial for engines that have been rebuilt or are used in performance applications.

Are these bearings suitable for a stock engine rebuild?

Yes, these bearings are suitable for stock engine rebuilds, especially if the crankshaft requires machining to a +0.020 inch size due to wear. The improved materials offer enhanced durability even in a stock application.

Specifications

Brand: King Engine Bearings
Part #: MB557GPC020
UPC: 611500616655

King Engine Bearings General Motors 262/ 267/ 302/ 307/ 327/ 350 (Size +0.020) Main Bearing Set

Name: King Engine Bearings General Motors 262/ 267/ 302/ 307/ 327/ 350 (Size +0.020) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-general-motors-262-267-302-307-327-350-t14-432478
Price: 274.27 USD
Availability: BackOrder

$274.27

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King Engine Bearings Main Bearing Set for GM 262-350ci V8 engines. Size +0.020.

Key Features

Main bearing set for GM 262, 267, 302, 307, 327, and 350 cubic inch V8 engines.
Bearings are sized +0.020 inches, intended for use with a crankshaft machined down by 0.020 inches.
Features a high-performance overlay that is 30% harder than standard for improved durability.
Constructed with a unique combination of materials for enhanced wear resistance and load capacity.
Designed to support the crankshaft and maintain proper oil clearance in rebuilt or performance engines.

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About this part

Product Details

These King Engine Bearings main bearings are built with a high-performance overlay that's 30% harder than standard. This improved durability helps them stand up to the demands of rebuilt or performance engines. They're specifically sized at +0.020 inches, meaning they're designed to fit crankshafts that have been machined down by 0.020 inches during an engine rebuild.

King uses a unique combination of materials and a specialized overlay to create bearings that offer better wear resistance and load-carrying capacity. This is important because the main bearings are critical for supporting the crankshaft and maintaining proper oil clearance. The +0.020 sizing is a common requirement when rebuilding engines that have seen significant wear or have been previously machined. This set is a solid option for anyone rebuilding a GM V8 engine from the 262ci up to the 350ci displacement.

When you're putting an engine back together, especially one that's been rebuilt or modified, getting the bearing clearances right is key. This set from King Engine Bearings is designed to help you achieve that with a well-built component that balances performance and durability.