What is the purpose of 'narrowed' rod bearings?

Narrowed rod bearings have a reduced chamfer on the big end compared to standard bearings. This design is often used in performance applications with aftermarket crankshafts to help maintain optimal oil film thickness and prevent oil from being squeezed out under high loads.

What material are these ACL rod bearings made from?

These bearings feature a special overlay material that ACL developed for performance applications. This overlay is designed to provide excellent wear resistance and compatibility with performance crankshafts.

Are these bearings suitable for a stock engine rebuild?

While these are Race Series bearings designed for performance, they can be used in a stock rebuild if you are looking for a well-built, durable component. However, they are particularly beneficial in engines that will be subjected to higher RPMs or increased stress.

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Specifications

Brand: ACL
Part #: 8B663HN-001

ACL Chevrolet V8 305-350-400 Race Series Narrowed Conrod Rod Bearing Set

Name: ACL Chevrolet V8 305-350-400 Race Series Narrowed Conrod Rod Bearing Set
Brand: ACL
SKU: acl-acl-chevrolet-v8-305-350-400-race-series-narrowed-conrod-rod-bearing-set-t14-610797
Price: 91.56 USD
Availability: BackOrder

$91.56

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Key Features

Fits 112+ vehicle make/model combinations.
ACL Race Series narrowed conrod rod bearing set.
Designed for Chevrolet V8 engines (305, 350, 400 cubic inch).
Features a special overlay material for performance crankshafts.
Narrowed design with reduced chamfer for performance applications.
Includes bearings for a complete V8 engine.

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About this part

Product Details

ACL has been making engine bearings for a long time, and this Race Series set is a popular choice for builders looking for a well-built component that fits right. The 'narrowed' aspect means they have a slightly reduced chamfer on the big end, which can be important when you're running a performance crankshaft with tighter clearances. This helps ensure you maintain proper oil film thickness, which is critical for preventing wear and keeping your engine running smoothly, especially when you've got a high-performance build going.

This set includes bearings for a complete V8 engine. When you're rebuilding or upgrading your Chevrolet V8, paying attention to the details like rod bearings makes a big difference in the longevity and performance of your engine. Make sure to follow the manufacturer's installation instructions carefully, as proper bearing clearance and lubrication are essential for these parts to perform as intended.