What does the '/S2-10' in the part number mean?

The '/S2-10' designation indicates that these bearings are 0.010 inches undersize. This means they are intended for use on crankshaft journals that have been machined down by 0.010 inches during an engine rebuild.

Are these bearings suitable for high-performance applications?

ACL's tri-metal overlay is known for its strength and ability to handle high loads, making these bearings a solid option for many performance builds. However, always consult with your engine builder to ensure they meet the specific demands of your application.

What is the difference between standard size and undersize bearings?

Standard size bearings are meant for factory-spec crankshaft journals. Undersize bearings, like these 0.010 inch undersize ones, are used when the crankshaft journals have been machined down to remove wear or damage, ensuring a proper fit with the new bearings.

ACL Chevrolet V8 396-402-427-454 1965-98 Engine Connecting Rod Bearing Set

Specifications

Brand: ACL
Part #: 8B743AO/S2-10

ACL Chevrolet V8 396-402-427-454 1965-98 Engine Connecting Rod Bearing Set

Name: ACL Chevrolet V8 396-402-427-454 1965-98 Engine Connecting Rod Bearing Set
Brand: ACL
SKU: acl-acl-chevrolet-v8-396-402-427-454-1965-98-engine-connecting-rod-bearing-set-t14-633057
Price: 21.08 USD
Availability: BackOrder

$21.08

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ACL connecting rod bearing set for Chevrolet V8 396-402-427-454 engines (1965-98). Direct fit.

Key Features

Fits Chevrolet V8 396, 402, 427, and 454 engines from 1965-1998.
Features ACL's tri-metal overlay for improved load capacity and durability.
Standard size (AO) with a 0.010 inch undersize (S2-10) for machined crankshaft journals.
Designed to reduce friction and wear between the connecting rod and crankshaft.
Well-built components for engine rebuilding and repair projects.

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Will this fit your vehicle?

Product Details

ACL's 8B743AO/S2-10 connecting rod bearing set is built for Chevrolet V8 engines, specifically the 396, 402, 427, and 454 cubic inch displacements. These bearings are a crucial component for keeping your engine running smoothly, as they sit between the connecting rod and the crankshaft, reducing friction and wear. If you're rebuilding an engine or replacing worn bearings, this set offers a solid option for your project.

ACL uses a specialized tri-metal overlay on these bearings, which is known for its strength and ability to handle high loads. This material combination helps to maintain oil film integrity, even under demanding conditions. The 'AO' in the part number indicates a standard size bearing, and the '/S2-10' signifies a 0.010 inch undersize, meaning these are intended for crankshaft journals that have been machined down by 0.010 inches. This is a common practice during engine rebuilding to ensure a fresh, perfectly sized surface for the bearings to run on.

This set is designed to fit a range of Chevrolet V8 applications from 1965 through 1998. When installing, always ensure your crankshaft journals are clean and properly machined to the specified size, and that you use the correct assembly lube. Proper installation is key to getting the most life out of these well-built bearings.