What does 'narrowed' mean for these main bearings?

A narrowed bearing has a slightly reduced width compared to a standard bearing. This is often used in performance engine builds to increase the clearance between the crankshaft and the bearing, which can improve oil flow and reduce friction under high stress.

What specific Chevrolet V8 engines does this bearing set fit?

This ACL Race Series bearing set is designed for Chevrolet V8 engines with displacements of 396, 402, 427, and 454 cubic inches. Always verify your engine's specific application.

Are these bearings suitable for a daily driver or only for race cars?

While designed for racing applications due to their narrowed profile and performance materials, these bearings can also be used in high-performance street engines. For a standard daily driver, a non-narrowed, standard-width bearing might be more appropriate unless specifically recommended by your engine builder.

Specifications

Brand: ACL
Part #: 5M829HN-10

ACL Chevrolet V8 396-402-427-454 Race Series (Narrowed) Engine Crankshaft Main Bearing Set

Name: ACL Chevrolet V8 396-402-427-454 Race Series (Narrowed) Engine Crankshaft Main Bearing Set
Brand: ACL
SKU: acl-acl-chevrolet-v8-396-402-427-454-race-series-narrowed-engine-crankshaft-main-t14-630918
Price: 142.46 USD
Availability: BackOrder

$142.46

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ACL Chevrolet V8 396-402-427-454 Race Series (Narrowed) Engine Crankshaft Main Bearing Set. This set is narrowed for specific performance applications.

Key Features

Fits Chevrolet V8 396, 402, 427, and 454 cubic inch engines.
Race Series narrowed main bearing set for performance applications.
Designed to handle the demands of high-RPM and heavy-load engine operation.
Helps manage oil flow and reduce friction in performance builds.
Well-built bearings from a popular engine component manufacturer.

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About this part

Product Details

When you're building or rebuilding a performance Chevrolet V8 engine, getting the crankshaft main bearings right is crucial for smooth operation and longevity. This ACL Race Series set is specifically designed for the 396, 402, 427, and 454 cubic inch V8 engines, offering a narrowed profile that's often needed for certain racing or high-performance builds where clearances are tighter.

ACL has been a well-known name in engine bearings for a long time, and this Race Series set uses their advanced materials and construction to handle the demands of a performance engine. The narrowed design means you'll have a bit more clearance between the crank and the bearing, which can help with oil flow and reduce friction under high RPMs and heavy loads. This is the kind of detail that makes a difference when you're pushing an engine hard.

This set includes the main bearings you'll need for your rebuild. Make sure to check your specific engine's service manual for installation procedures and any special requirements, especially concerning the narrowed bearing profile and oil clearances.