What does the CT-1 coating do for these bearings?

The CT-1 coating on these ACL bearings helps to reduce friction between the bearing and the crankshaft. This also provides an extra layer of wear protection, which is especially beneficial during engine break-in and under high-stress operating conditions.

Are these bearings suitable for a stock engine rebuild?

Yes, these are standard size bearings, meaning they are intended for use with a crankshaft that is within its original factory specifications. The 270-degree oil groove and CT-1 coating offer improved lubrication and wear resistance, making them a solid choice for both stock and performance-oriented LS engine rebuilds.

What is the advantage of the 270-degree oil groove?

A 270-degree oil groove means the groove that distributes oil around the bearing covers more of the bearing surface compared to a standard 180-degree groove. This helps to maintain a more consistent oil film, ensuring better lubrication and reducing the risk of oil starvation under demanding engine loads and high RPMs.

Specifications

Brand: ACL
Part #: 5M7298HC-STD
UPC: 9315726457962

ACL Chevy V8 4.8/5.3/5.7/6.0L Race Series Standard Size Main Bearing Set - CT-1 Coated

Name: ACL Chevy V8 4.8/5.3/5.7/6.0L Race Series Standard Size Main Bearing Set - CT-1 Coated
Brand: ACL
SKU: acl-acl-chevy-v8-4-8-5-3-5-7-6-0l-race-series-standard-size-main-bearing-set-ct--t14-372723
Price: 253.34 USD
Availability: InStock

$253.34

Only 1 left in stock

ACL Chevy V8 LS Gen III-IV standard size main bearing set with CT-1 coating. Built for performance and durability.

Key Features

Fits 61+ vehicle make/model combinations including Chevrolet Silverado, Tahoe, Corvette, and Cadillac Escalade.
Standard size main bearing set for Chevy V8 LS Gen III - IV engines.
Features a 270-degree oil groove for improved lubrication.
Includes CT-1 coating for reduced friction and enhanced wear protection.
Designed for performance applications where engine stress is higher.
Well-built by ACL, a reputable manufacturer of engine bearings.

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About this part

Product Details

You get a full set of ceramic pads and slotted rotors in this kit, which means one box handles the whole brake job. This ACL Race Series main bearing set is built for Chevy V8 LS Gen III and IV engines. These bearings are crucial for keeping your crankshaft spinning smoothly within the engine block, and a good set can handle the extra stress of performance driving.

This set features a 270-degree oil groove, which helps ensure consistent lubrication even under high RPMs and heavy loads. The CT-1 coating adds an extra layer of protection, reducing friction and wear, especially during the critical break-in period and in demanding conditions. They are standard size, meaning they're meant to be used with a crankshaft that hasn't been machined undersize. ACL has been making engine bearings for a long time, and this Race Series set is a well-built option for anyone rebuilding or upgrading their LS engine.

This set fits a wide range of GM LS-based vehicles, from trucks and SUVs like the Silverado and Tahoe to performance cars like the Corvette. Make sure to check the full fitment list to confirm it matches your specific application. When installing, always follow the manufacturer's torque specifications and break-in procedures to get the most out of these bearings.