What does 'half-groove' mean for these bearings?

A half-groove bearing has an oil groove on only one side, typically the main bearing side. This design is used in certain crankshafts to ensure oil is directed effectively to the main journals while maintaining a solid bearing surface on the connecting rod side.

What is the correct oil clearance for these bearings?

Proper oil clearance is critical for engine bearing life. You should always consult your specific engine's service manual for the exact oil clearance specifications for your 273, 318, or 326 V8 engine.

Are these bearings suitable for a performance build?

ACL is a reputable brand for engine bearings, and these are built to the original specifications for your engine. For high-performance applications, it's always recommended to consult with a performance engine builder to ensure the chosen bearings meet the specific demands of your build.

ACL Chrysler Prod. V8 273-318-326 1956-73 Engine Crankshaft Main Bearing Set

Specifications

Brand: ACL
Part #: 5M540P-30

ACL Chrysler Prod. V8 273-318-326 1956-73 Engine Crankshaft Main Bearing Set

Name: ACL Chrysler Prod. V8 273-318-326 1956-73 Engine Crankshaft Main Bearing Set
Brand: ACL
SKU: acl-acl-chrysler-prod-v8-273-318-326-1956-73-engine-crankshaft-main-bearing-set-t14-632425
Price: 25.63 USD
Availability: BackOrder

$25.63

On Backorder

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

ACL crankshaft main bearing set for Chrysler V8 273-318-326 engines (1956-73). Essential for engine rebuilds.

Key Features

Fits Chrysler Production V8 engines including 273, 318, and 326 cubic inch displacements.
Designed for vehicle models from 1956 through 1973.
Features a half-groove design for proper oil distribution.
ACL is a well-known manufacturer of engine bearings.
Essential component for engine rebuilding and overhaul projects.

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Will this fit your vehicle?

Product Details

Rebuilding the bottom end of your classic Mopar V8, like a 273, 318, or 326 cubic inch engine, means you need a solid set of main bearings. These ACL main bearings are built to handle the demands of these iconic engines, ensuring smooth rotation of your crankshaft. Getting the right bearings is crucial for proper oil clearance and long-term engine health, especially when you're putting in the work to restore or enhance your vehicle.

ACL has been making engine bearings for a long time, and this set is made to fit your specific Chrysler Production V8 engine from 1956 through 1973. This particular set is a half-groove style, which is important for certain engine designs to ensure proper oil flow to the crankshaft. When you're installing these, make sure to check your service manual for the correct oil clearance specifications and follow proper assembly procedures to get the best performance and longevity out of your rebuild.

This set is designed for engines like the Dodge Challenger, Charger, Coronet, Dart, and others from the specified years. If you're in the middle of a full engine overhaul, a quality main bearing set like this from ACL is a fundamental part of the job.