What does the 'AO/S2-20' in the part number mean?

The 'AO' typically indicates a standard size bearing, while the '/S2-20' signifies that these bearings are 0.020 inches undersize. This is important if your crankshaft journals have been machined undersize during a previous rebuild.

Do these bearings come with assembly lube?

This set includes the connecting rod bearings themselves. It is recommended to use a quality engine assembly lubricant when installing new bearings to ensure proper lubrication during initial startup.

Are these bearings suitable for a high-performance engine build?

These ACL bearings are well-built and suitable for standard engine rebuilds. For extreme high-performance applications with significantly increased horsepower or RPMs, it's always best to consult with a performance engine builder to ensure the chosen bearings meet your specific needs.

ACL Ford Prod. V8 255-289-302 1962-98 Engine Connecting Rod Bearing Set

Specifications

Brand: ACL
Part #: 8B634AO/S2-20

ACL Ford Prod. V8 255-289-302 1962-98 Engine Connecting Rod Bearing Set

Name: ACL Ford Prod. V8 255-289-302 1962-98 Engine Connecting Rod Bearing Set
Brand: ACL
SKU: acl-acl-ford-prod-v8-255-289-302-1962-98-engine-connecting-rod-bearing-set-t14-633290
Price: 21.96 USD
Availability: BackOrder

$21.96

On Backorder

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

Fits 1964-1995 Ford Mustang. ACL connecting rod bearing set for 255, 289, 302, and 300 V8 engines.

Key Features

Fits 1964-1995 Ford Mustang, 1975-1996 Ford F-150, 1980-1982 Ford Fairmont, 1963 Ford 300, and 1962-1963 Ford Country Sedan.
Designed for Ford 255, 289, 302, and 300 V8 engines.
Standard size with a 0.020 inch undersize (AO/S2-20) for machined crankshafts.
Well-built connecting rod bearings from ACL.
Helps maintain proper oil clearance between the connecting rod and crankshaft.

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Will this fit your vehicle?

Product Details

Doing an engine rebuild on your Ford Mustang, likely with a 255, 289, 302, or 300 V8 engine? These connecting rod bearings from ACL are a solid option to get your engine back in shape. They are a direct replacement for the original bearings, helping to ensure proper oil clearance and smooth operation between the connecting rod and the crankshaft.

ACL has been making engine bearings for a long time, and these are well-built for the job. They are designed to handle the stresses of daily driving and typical engine use. The 'AO/S2-20' in the part number indicates they are a standard size bearing with a 0.020 inch undersize, which is important if your crankshaft journals have been machined down during a previous rebuild or repair. Always double-check your crankshaft dimensions before ordering bearings.

When you're putting your engine back together, getting the right bearings is crucial for longevity. These ACL bearings fit a wide range of Ford V8s from the 60s through the 90s, making them a popular choice for many classic and later model Mustang owners doing engine work.