What is the purpose of main bearings?

Main bearings are critical engine components that support the crankshaft within the engine block. They create a low-friction surface for the crankshaft to rotate on, absorbing the loads from combustion and ensuring smooth engine operation.

What does '0.030 inch undersize' mean for these bearings?

This means the bearings are manufactured to be 0.030 inches smaller in diameter than standard size. They are intended for use when the crankshaft journals have been machined down by 0.030 inches to correct wear or damage.

Do I need to buy anything else to install these bearings?

Typically, when replacing main bearings, you will also need to ensure the crankshaft is properly machined and cleaned. It's also recommended to replace the crankshaft seals and potentially the oil pump to ensure optimal lubrication for the new bearings.

Clevite Main Bearing Set MS429P30

Name: Clevite Main Bearing Set
Brand: Clevite
Price: 92.47 USD
Availability: InStock

Clevite Main Bearing Set

$92.47

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Clevite Main Bearing Set MS429P30. This set is designed for many classic Chevrolet engines, offering a direct fit for your rebuild.

Key Features

Fits 26+ vehicle make/model combinations, including many Chevrolet models from 1955-1967.
This is a main bearing set, designed to support the crankshaft in the engine block.
The bearings are 0.030 inches undersize, intended for use with a crankshaft machined to this specification.
Clevite is a well-known brand for engine components.

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Product Details

This Clevite main bearing set, part number MS429P30, includes all the necessary bearings to rebuild the crankshaft main journals in your engine. These bearings are crucial for supporting the rotating crankshaft and ensuring it spins smoothly within the engine block. They are designed to handle the immense pressures and heat generated during combustion, helping to prevent premature wear and engine failure.

Clevite has been a well-known name in engine bearings for a long time, and this set is built to meet the demands of classic Chevrolet engines. The bearings feature a specific material composition and construction that helps manage friction and heat, which is especially important in older engine designs. This particular set is sized at 0.030 inches undersize, meaning it's intended for crankshafts that have been machined down by that amount to correct wear or out-of-round conditions. Proper installation, including ensuring the crankshaft journals are clean and within the specified tolerance, is key to getting the most out of these bearings.

This set fits a wide range of classic Chevrolet vehicles, including popular models like the 1955-1967 Chevrolet Bel Air, 1960-1967 Chevrolet C10 Pickup, and the 1967 Chevrolet Camaro. Make sure to verify fitment for your specific year and model to ensure you're getting the right part for your engine rebuild.