What does '20 Oversize' mean for these bearings?

The '20 Oversize' designation means these bearings are designed to fit a crankshaft that has been machined down by 0.020 inches from its original factory size. This is common when rebuilding an engine to correct for wear or to achieve specific clearances.

What is the tri-metal overlay on these bearings?

The tri-metal overlay is a construction method using three different layers of metal. This design provides a good balance of strength, durability, and the ability to conform to the crankshaft, which is beneficial for performance engines under stress.

Do these bearings come with installation hardware?

This set includes the main bearings themselves. You will need to ensure you have appropriate assembly lubricant and follow the manufacturer's torque specifications for installation.

Specifications

Brand: ACL
Part #: 5M829H-20
UPC: 9315726188002

ACL Chevrolet V8 396/402/427/454 Race Series 20 Oversize Main Bearing Set

Name: ACL Chevrolet V8 396/402/427/454 Race Series 20 Oversize Main Bearing Set
Brand: ACL
SKU: acl-acl-chevrolet-v8-396-402-427-454-race-series-20-oversize-main-bearing-set-t14-4340832
Price: 118.77 USD
Availability: BackOrder

$118.77

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ACL Chevrolet V8 396/402/427/454 Race Series 20 Oversize Main Bearing Set. These bearings are built for performance applications.

Key Features

This is a 0.020 inch oversize main bearing set.
ACL Race Series bearings are built for performance applications.
Features a tri-metal overlay for strength and conformability.
Designed for Chevrolet V8 engines including 396, 402, 427, and 454 cubic inch displacements.
Includes all necessary main bearings for a complete engine build.

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About this part

Product Details

When you're rebuilding a performance Chevrolet V8 like the 396, 402, 427, or 454, the main bearings are critical for keeping everything running smoothly. These ACL Race Series bearings are a solid option for those looking to get the most out of their engine. They're built with a focus on durability and performance, which is exactly what you need when you're pushing an engine hard.

The Race Series bearings feature a tri-metal overlay, which is a common choice for performance builds because it offers good strength and conformability. This means they can handle the higher loads and temperatures that come with a performance engine. This particular set is 0.020 inches oversize, designed to fit crankshafts that have been machined down to that size. Using the correct oversize bearing is essential for maintaining proper oil clearance and ensuring the longevity of your engine build.

This set includes all the main bearings you'll need for your Chevrolet V8. Make sure to check your crankshaft's specifications to confirm it has been machined to a 0.020 inch undersize before ordering. Proper installation, including cleaning and oiling, is key to getting the best performance and life out of these bearings.