What does the +0.50mm sizing mean for these main bearings?

The +0.50mm sizing means these bearings are intended for use on a crankshaft that has been machined down by 0.50mm. This is a common practice during engine rebuilding to achieve proper oil clearance when the crankshaft journals have been worn or resurfaced.

What type of engine load is this bearing set best suited for?

This King Engine Bearings set is ideal for medium-load engines. The bi-metal aluminum material is chosen for its performance characteristics in applications that aren't subjected to the extreme stresses of heavy-duty or high-performance racing engines.

Are these bearings environmentally friendly?

Yes, these bearings feature a lead-free composite construction. This makes them an environmentally safe option, aligning with modern emissions and material standards.

Specifications

Brand: King Engine Bearings
Part #: MB5257SI0.5
UPC: 611500435591

King Engine Bearings General Motors 379/V8 Ohv (Size +0.50mm) Main Bearing Set

Name: King Engine Bearings General Motors 379/V8 Ohv (Size +0.50mm) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-general-motors-379-v8-ohv-size-0-50mm--t14-770600
Price: 71.35 USD
Availability: BackOrder

$71.35

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King Engine Bearings General Motors 379/V8 Ohv (Size +0.50mm) Main Bearing Set. A well-built bi-metal aluminum bearing set for medium-load engines.

Key Features

Fits a wide range of General Motors 379/V8 OHV engines.
Main bearing set is 0.50mm undersize for use with reground crankshafts.
Constructed with a bi-metal aluminum material.
Lead-free composite is environmentally safe.
Designed for medium-load engine 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

If you're rebuilding the bottom end of your engine, getting the right main bearings is crucial for smooth operation and longevity. This King Engine Bearings Main Bearing Set is specifically made for General Motors 379 cubic inch V8 OHV engines, and it's sized at +0.50mm, meaning it's designed to fit crankshaft journals that have been machined down by 0.50mm. This set is a well-built option for a wide range of vehicles, including models like the Chevrolet C1500, GMC Sierra, and AM General Hummer.

King Engine Bearings specializes in creating high-performance engine bearings, and this set uses a bi-metal aluminum material. This construction is ideal for medium-load engines and is lead-free, making it an environmentally safe choice. The +0.50mm sizing indicates these bearings are intended for use when the crankshaft has been reground to a specific undersize, which is a common practice during engine overhauls to ensure proper clearances and oil film.