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

The CT-1 coating on these ACL bearings is designed to reduce friction and wear. This is particularly beneficial during the engine's break-in period and under demanding operating conditions, helping to protect the bearing surfaces.

Are these bearings suitable for a stock rebuild or a performance build?

These are ACL High Performance Main Bearings, featuring a tighter .001 inch oil clearance and a friction-reducing coating. While they can be used in a stock rebuild, they are particularly well-suited for performance applications where improved oil pressure and durability are desired.

What does 'STD Size' mean for these main bearings?

STD size means these bearings are intended for use with a crankshaft that is at its original factory diameter or has been machined back to standard size. If your crankshaft has been ground undersize, you would need bearings with a corresponding undersize dimension.

Specifications

Brand: ACL
Part #: 5M829HXNC-STD
UPC: 9315726458068

ACL Chevy V8 396/402/427/454 STD Size High Perf Main Bearing Set w/.001 Oil Clearance - CT-1 Coated

Name: ACL Chevy V8 396/402/427/454 STD Size High Perf Main Bearing Set w/.001 Oil Clearance - CT-1 Coated
Brand: ACL
SKU: acl-acl-chevy-v8-396-402-427-454-std-size-high-perf-main-bearing-set-w-001-oil-c-t14-372734
Price: 213.07 USD
Availability: BackOrder

$213.07

On Backorder

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

ACL High Performance Main Bearing Set for Chevy V8 396-454 engines. STD size with .001 oil clearance and CT-1 coating.

Key Features

Fits Chevrolet and GMC V8 engines including 396, 402, 427, and 454 cubic inch displacements.
Standard (STD) size bearings for use with a factory-spec or freshly machined crankshaft.
Features a .001 inch oil clearance for improved oil pressure and performance.
Includes a CT-1 coating to reduce friction and wear, aiding in break-in and durability.
ACL is a well-known manufacturer of engine bearings.
This is a set of main bearings for your engine's crankshaft.

Secure CheckoutFast Shipping631-982-0042

Will this fit your vehicle?

About this part

Product Details

Rebuilding the bottom end of your classic Chevy V8, like a 396, 402, 427, or 454? These ACL High Performance Main Bearings are a solid choice for getting your engine back in shape. They're built to handle the demands of performance builds and are a popular option when you need reliable bearing surfaces for your crankshaft.

What sets these bearings apart is the CT-1 coating. This advanced coating helps reduce friction and wear, especially during the critical break-in period and under high-load conditions. They're manufactured to standard (STD) size, meaning they're intended for use with a crankshaft that hasn't been machined undersize. The specific .001 inch oil clearance is a tighter tolerance than stock, which can help improve oil pressure and overall engine response in a performance application.

This set includes all the main bearings you'll need for your Chevy V8. When you're putting an engine back together, especially one that's going to see spirited use, using well-built bearings like these from ACL is a smart move to ensure longevity and performance. Make sure to follow the manufacturer's installation instructions carefully, paying close attention to bearing bore preparation and crankshaft journal cleanliness.