What does '.40mm oversized' mean for these bearings?

This means the bearings are slightly larger than standard size. They are intended for use when the engine's crankshaft has been machined down by 0.40mm to correct wear or runout. Always measure your crankshaft journals to confirm the correct bearing size needed for your rebuild.

What is the purpose of the different oil groove patterns?

The specific oil groove patterns on the intermediate and thrust bearings are designed to optimize oil flow and maintain consistent oil pressure. This helps ensure the crankshaft is properly lubricated, reducing friction and wear, especially in high-performance or rebuilt engines.

Are these bearings suitable for a stock crankshaft?

No, these bearings are .40mm oversized and are intended for use with a crankshaft that has been machined to match this size. If your crankshaft is still at its original factory dimensions, you will need standard size bearings.

ACL 1997+ Chevy V8 4.8/5.3/5.7/6.0 Gen 3 .40mm Oversized Main Bearing Set

Specifications

Brand: ACL
Part #: 5M7298A-40
UPC: 084777700943

ACL 1997+ Chevy V8 4.8/5.3/5.7/6.0 Gen 3 .40mm Oversized Main Bearing Set

Name: ACL 1997+ Chevy V8 4.8/5.3/5.7/6.0 Gen 3 .40mm Oversized Main Bearing Set
Brand: ACL
Price: 25.59 USD
Availability: InStock

$25.59

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Fits 1997-2004, 2006-2013 Chevrolet Corvette. ACL .40mm oversized main bearing set for Gen 3 V8 engines.

Key Features

Fits 1997-2004, 2006-2013 Chevrolet Corvette.
ACL main bearing set for Gen 3 V8 engines (4.8L, 5.3L, 5.7L, 6.0L).
Bearings are .40mm oversized for use with machined crankshafts.
Intermediate bearings have a 120-degree oil groove on the upper half.
Thrust bearings feature a 180-degree oil groove on the upper half.
Helps maintain proper crankshaft clearance and oil lubrication.

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Fits these vehicles

Chevrolet Camaro 1998-2002, 2010-2015
Chevrolet Corvette 1997-2004, 2006-2013

Product Details

Already running a built Gen 3 V8 engine? This set of .40mm oversized main bearings from ACL is the next piece of the puzzle for your 1997-2004 or 2006-2013 Chevrolet Corvette. These bearings are crucial for ensuring proper clearance and lubrication between your crankshaft and the engine block, especially after machining or when using an aftermarket crankshaft.

ACL has designed these bearings with specific oil groove patterns to help maintain consistent oil pressure. The intermediate bearings feature a 120-degree oil groove on the upper half, while the thrust bearings have a 180-degree groove on the upper half. This attention to detail helps ensure your engine stays well-lubricated under various operating conditions, which is key for longevity and performance in these powerful V8s.

When rebuilding or modifying your Corvette's engine, using the correct size bearings is essential. These are .40mm oversized, meaning they are intended for crankshafts that have been turned down by that amount. Always confirm your crankshaft's dimensions before ordering to ensure a proper fit and optimal engine health.