What does the 'PO' designation mean in the part number?

The 'PO' in the part number typically indicates a performance overlay on the bearing material. This specialized overlay is designed to offer enhanced durability and wear resistance, especially under the higher stresses found in modified or performance engines.

Are these bearings suitable for a stock engine rebuild?

Yes, these bearings are suitable for stock engine rebuilds as long as the crankshaft journals are within factory specifications and have not been ground undersize. The 'S2-40' designation indicates they are standard size.

What is the importance of oil clearance with connecting rod bearings?

Proper oil clearance is crucial for engine health. It allows a thin film of oil to form between the bearing and the crankshaft, which lubricates and cools the surfaces, preventing metal-to-metal contact and reducing wear.

ACL Chevrolet V8 396-402-427-454 1965-98 Engine Connecting Rod Bearing Set

Specifications

Brand: ACL
Part #: 8B743PO/S2-40

ACL Chevrolet V8 396-402-427-454 1965-98 Engine Connecting Rod Bearing Set

Name: ACL Chevrolet V8 396-402-427-454 1965-98 Engine Connecting Rod Bearing Set
Brand: ACL
SKU: acl-acl-chevrolet-v8-396-402-427-454-1965-98-engine-connecting-rod-bearing-set-t14-632688
Price: 36.84 USD
Availability: BackOrder

$36.84

On Backorder

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

Key Features

Fits Chevrolet V8 396, 402, 427, and 454 engines from 1965-1998.
Designed for performance applications where increased power output is present.
Features a multi-layer bearing material with a steel backing for structural integrity.
Includes a performance overlay ('PO') for improved wear resistance under load.
Standard (0.000) size for crankshaft journals, suitable for factory or freshly machined cranks.
Connects the crankshaft to the connecting rod, maintaining proper oil clearance.

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Will this fit your vehicle?

Product Details

Already running a built Chevrolet V8 with larger displacement like the 396, 402, 427, or 454? These ACL connecting rod bearings are the next piece of the puzzle to ensure your engine can handle the extra power. They are designed to provide a solid interface between the crankshaft and connecting rod, crucial for maintaining proper oil clearance and reducing friction in high-performance applications.

ACL has been a well-known name in engine bearings for a long time, and this set is built to meet the demands of modified V8 engines. They feature a multi-layer bearing material with a steel backing for strength and a specific overlay for durability. The 'PO' in the part number indicates a performance overlay, which helps with wear resistance under higher loads. This set is sized at standard (0.000) for the crankshaft journals, meaning it's intended for use with a crankshaft that has not been ground undersize.

When you're building or rebuilding a performance V8, getting the bearing clearances right is critical for engine longevity. This set from ACL is a popular choice for many builders looking for reliable performance without breaking the bank. Make sure to check your crankshaft journal dimensions before ordering to confirm you need standard size bearings.