What is the purpose of the CT-1 coating on these bearings?

The CT-1 coating on these ACL Race Series bearings is designed to reduce friction and wear. This is particularly beneficial during the engine's break-in period and under the higher stress levels found in performance applications.

Why do these bearings come in an oversize?

These bearings are 0.010 inch oversize. This sizing is intended for use when the crankshaft journals have been machined down to this specific size during an engine rebuild to correct wear or damage.

What is the difference between these and standard main bearings?

These are ACL Race Series bearings, meaning they are built with tighter tolerances and materials suited for higher performance and stress levels compared to standard replacement bearings. The CT-1 coating also offers an added layer of protection.

ACL Chevrolet V8 396/402/427/454 Race Series 10 Oversize Main Bearing Set - CT-1 Coated

Specifications

Brand: ACL
Part #: 5M829HC-10
UPC: 9315726458006

ACL Chevrolet V8 396/402/427/454 Race Series 10 Oversize Main Bearing Set - CT-1 Coated

Name: ACL Chevrolet V8 396/402/427/454 Race Series 10 Oversize Main Bearing Set - CT-1 Coated
Brand: ACL
SKU: acl-acl-chevrolet-v8-396-402-427-454-race-series-10-oversize-main-bearing-set-ct-t14-372727
Price: 159.27 USD
Availability: BackOrder

$159.27

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ACL Race Series 0.010 inch oversize main bearing set for Chevrolet V8 396-454 engines with CT-1 coating.

Key Features

Fits 1965-1974 Chevrolet Bel Air, Biscayne, Blazer, Brookwood, C10 Pickup, C10 Suburban, C20 Pickup, C20 Suburban, C30 Pickup, Camaro, Caprice, Chevelle, Chevy II, Corvette, El Camino, Estate, G10 Van, G20 Van, G30 Van, Impala, K10 Pickup, K10 Suburban, K20 Pickup, K20 Suburban, K30 Pickup, Kingswood, Laguna, Malibu, Monte Carlo, Nova, P10 Van, P20 Van, P30 Van, Townsman, and 1972-1974 Excalibur Phaeton.
Fits 1968-1974 GMC C15/C1500 Pickup and C15/C1500 Suburban.
Main bearing set is 0.010 inch oversize for use with machined crankshaft journals.
Features a CT-1 coating to reduce friction and wear, especially during break-in.
Designed for Chevrolet V8 engines including 396, 402, 427, and 454 cubic inch displacements.
Race Series bearings are built for performance applications.

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Will this fit your vehicle?

Product Details

ACL has been making engine bearings for decades, and this Race Series main bearing set for your Chevrolet V8 is one of their staples. If you're rebuilding a big-block Chevy like the 396, 402, 427, or 454, these bearings are built to handle the demands of performance applications. They are specifically sized at 0.010 inches oversize, which is crucial if your crankshaft journals have been machined to this size during a rebuild.

What sets these apart is the CT-1 coating. This advanced coating helps reduce friction and wear, especially during the critical break-in period and under high-stress conditions. It's a well-built component designed to keep your engine running smoothly and reliably. When you're putting together a performance engine, the right bearings are essential for longevity and power delivery.

This set includes main bearings for a wide range of Chevrolet and GMC vehicles from the mid-60s to mid-70s. Make sure to check the fitment details to confirm compatibility with your specific truck, car, or van. It's always a good idea to have your crankshaft journals measured by a machine shop to confirm the exact size needed before ordering bearings.