What is the primary function of main bearings in an engine?

Main bearings support the crankshaft within the engine block. They allow the crankshaft to rotate smoothly while maintaining a precise oil clearance, which is essential for proper lubrication and oil pressure.

What does the specialized overlay material on these bearings do?

The specialized overlay material is designed to resist wear and maintain a consistent oil film between the bearing and the crankshaft. This helps protect the components and ensures reliable performance, especially under load.

Are these bearings a direct fit for my 350 engine?

Yes, this King Engine Bearings main bearing set (MB557GPC) is designed to fit General Motors 350 cubic inch V8 engines. It is intended as a direct replacement for the original main bearings.

Specifications

Brand: King Engine Bearings
Part #: MB557GPC
UPC: 611500616617

King Engine Bearings General Motors 262/ 267/ 302/ 307/ 327/ 350 Main Bearing Set

Name: King Engine Bearings General Motors 262/ 267/ 302/ 307/ 327/ 350 Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-general-motors-262-267-302-307-327-350-t14-432475
Price: 274.27 USD
Availability: BackOrder

$274.27

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King Engine Bearings Main Bearing Set MB557GPC. For GM 262-350 V8 engines. Well-built, direct fit.

Key Features

Fits General Motors 262, 267, 302, 307, 327, and 350 V8 engines.
Main bearing set for engine bottom end rebuilds.
Features a specialized overlay material for wear resistance.
Helps maintain consistent oil film thickness.
Designed for proper oil clearance and smooth crankshaft rotation.
Well-built construction for reliable performance.

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About this part

Product Details

If you're rebuilding the bottom end of your GM V8 engine, getting the main bearings right is crucial for long-term reliability. This main bearing set from King Engine Bearings is designed for a range of popular GM displacements, including the 262, 267, 302, 307, 327, and 350 cubic inch small-block V8s. These bearings are a key component in ensuring your crankshaft spins smoothly and with proper oil clearance.

King Engine Bearings are known for their well-built construction. This set features a specialized overlay material that helps to resist wear and maintain consistent oil film thickness, even under demanding conditions. The precise dimensions ensure they fit right into your engine block, making installation straightforward for a mechanic. Proper main bearing installation is critical for oil pressure and overall engine health, and this set offers a solid option for your rebuild project.

When you're putting an engine back together, using reliable components makes all the difference. This King main bearing set is a popular choice for many engine builders looking for dependable performance for their GM V8.