What does 'narrowed' mean for these bearings?

The 'narrowed' designation means these bearings have a slightly reduced width compared to standard bearings. This is often necessary when using crankshafts that have been modified or have reduced bearing journal widths, common in performance or racing applications.

What is the advantage of the dowel pin on these bearings?

The dowel pin on the bearing is a small protrusion that fits into a corresponding hole in the connecting rod. This ensures the bearing is correctly oriented and seated, preventing it from spinning within the rod under load and maintaining proper oil clearance.

Are these bearings suitable for a daily driver or only for racing?

While designed for performance and race applications, these ACL Race Series bearings are also a well-built option for a high-performance street engine. They offer improved durability and oil control over stock bearings, which can be beneficial for any engine that sees spirited driving or heavy use.

Specifications

Brand: ACL
Part #: 8B743HXND-STD

ACL Chevrolet V8 396-402-427-454 Narrowed Race Series with Dowel Engine Connecting Rod Bearing Set

Name: ACL Chevrolet V8 396-402-427-454 Narrowed Race Series with Dowel Engine Connecting Rod Bearing Set
Brand: ACL
SKU: acl-acl-chevrolet-v8-396-402-427-454-narrowed-race-series-with-dowel-engine-conn-t14-630507
Price: 144.78 USD
Availability: BackOrder

$144.78

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

ACL Race Series connecting rod bearings for Chevrolet V8 396-454 engines. STD size, narrowed width with dowel.

Key Features

Fits 63+ vehicle make/model combinations including Chevrolet and GMC V8 engines.
Standard (STD) size for crankshaft journals within factory specifications.
Narrowed width design for compatibility with modified crankshafts.
Includes dowel pin for precise bearing placement and oil flow.
ACL Race Series construction for improved performance and durability.
Designed for Chevrolet 396, 402, 427, and 454 cubic inch V8 engines.

Secure CheckoutFast Shipping631-982-0042

Will this fit your vehicle?

About this part

Product Details

ACL has been making engine bearings for decades, and this Race Series connecting rod bearing set for your Chevrolet V8 is one of their staples. These bearings are built for performance applications where tighter tolerances and improved oil control are key. The narrowed width helps accommodate crankshafts with reduced bearing surface area, often found in modified or race engines, while the integrated dowel pin ensures precise placement within the connecting rod for consistent oil flow and load distribution.

This set features a standard (STD) size, meaning it's designed to fit crankshaft journals that are still within their original factory specifications. The Race Series design incorporates advanced materials and manufacturing techniques to handle higher loads and temperatures than stock bearings. They are well-built to resist fatigue and maintain their shape under demanding conditions, which is crucial for keeping your engine running smoothly and reliably when you push it hard.

If you're building a performance engine or refreshing a classic V8, these ACL bearings are a solid option. They are designed to fit a wide range of Chevrolet big-block engines from the mid-60s through the mid-70s, including popular models like the 396, 402, 427, and 454 cubic inch displacements. Always refer to your specific engine's service manual for detailed installation procedures and torque specifications.