What is the advantage of extra oil clearance in these bearings?

Extra oil clearance allows for a larger volume of oil to flow through the bearing. This helps to reduce friction and keep the bearing cooler, which is especially important for high-performance or racing engines that experience higher loads and temperatures.

Are these bearings suitable for a stock engine rebuild?

These are standard size bearings, meaning they fit a crankshaft with factory specifications. However, the 'Race Series' designation and extra oil clearance are geared towards performance applications. For a mild street build, they can work, but for a strict stock rebuild, standard replacement bearings might be more appropriate.

What is the difference between standard size and undersize bearings?

Standard size bearings are meant to be used with a crankshaft that is within factory specifications. Undersize bearings (like -010 or -020) are used when the crankshaft journals have been machined down due to wear or damage, and they help to restore the correct bearing clearance.

ACL Chevrolet V8 396/402/427/454 Race Series Standard Size Main Bearing Set with Extra Oil Clearance

Specifications

Brand: ACL
Part #: 5M829HX-STD
UPC: 9315726216323

ACL Chevrolet V8 396/402/427/454 Race Series Standard Size Main Bearing Set with Extra Oil Clearance

Name: ACL Chevrolet V8 396/402/427/454 Race Series Standard Size Main Bearing Set with Extra Oil Clearance
Brand: ACL
SKU: acl-acl-chevrolet-v8-396-402-427-454-race-series-standard-size-main-bearing-set--t14-4340834
Price: 121.13 USD
Availability: InStock

$121.13

Only 7 left in stock

ACL Chevrolet V8 396/402/427/454 Race Series Standard Size Main Bearing Set with Extra Oil Clearance. Built for demanding applications.

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.
Standard size bearings designed for factory-spec crankshafts.
Extra oil clearance allows for increased oil flow, reducing friction and heat in high-performance applications.
Race Series construction is built to withstand higher loads and stresses.
Designed for Chevrolet V8 engines including 396, 402, 427, and 454 cubic inch displacements.

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Will this fit your vehicle?

Product Details

These bearings are a standard size, meaning they're meant to be used with a factory-spec crankshaft. What sets this set apart is the extra oil clearance. This is important for high-performance or racing applications because it allows for a larger volume of oil to flow through the bearing, helping to keep things cool and reducing friction under heavy load. The Race Series designation means they're built with materials and construction methods that can withstand more abuse than standard replacement bearings.

If you're rebuilding a performance Chevrolet V8 like a 396, 402, 427, or 454, this set is a popular choice. Make sure to check your crankshaft journals for any wear or damage before installation, and always follow the manufacturer's recommended torque specifications and oil clearance guidelines.