What does '0.010 inch undersize' mean for these bearings?

This means the bearings are designed to fit a crankshaft that has been machined down by 0.010 inches. This is a common practice during engine rebuilding to correct for wear on the crankshaft journals or to achieve specific bearing clearances.

Are these bearings suitable for a stock engine rebuild?

While these are Race Series bearings built for performance, they can certainly be used in a stock rebuild if you are machining the crankshaft. They offer a well-built option that ensures proper oil clearance and durability.

What other parts are typically needed when replacing connecting rod bearings?

When replacing connecting rod bearings, it's standard practice to also inspect and potentially replace rod bolts, and ensure the crankshaft journals are clean and within specification. If the crankshaft has been machined, you'll need to follow the manufacturer's recommended assembly lube and torque procedures.

ACL Ford Prod. V8 255-289-302 Race Series Engine Connecting Rod Bearing Set

Specifications

Brand: ACL
Part #: 8B634H-010

ACL Ford Prod. V8 255-289-302 Race Series Engine Connecting Rod Bearing Set

Name: ACL Ford Prod. V8 255-289-302 Race Series Engine Connecting Rod Bearing Set
Brand: ACL
SKU: acl-acl-ford-prod-v8-255-289-302-race-series-engine-connecting-rod-bearing-set-t14-630884
Price: 103.86 USD
Availability: BackOrder

$103.86

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ACL Ford V8 255-289-302 Race Series connecting rod bearing set. These are 0.010 inch undersize for engine rebuilding.

Key Features

Fits many Ford V8 engines including 255, 289, and 302 cubic inch displacements.
Race Series bearings are built for higher performance applications.
0.010 inch undersize for use with a machined crankshaft.
Helps maintain proper oil clearance for crankshaft and connecting rod.
Well-built by ACL, a trusted name in engine components.

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Will this fit your vehicle?

Product Details

When you're rebuilding a Ford V8 engine, especially one destined for performance use, the connecting rod bearings are critical. These ACL Race Series bearings are built to handle the extra stress that comes with higher RPMs and increased power output. They are designed to provide a strong, consistent oil film between the crankshaft and connecting rod, which is essential for preventing premature wear and ensuring engine longevity under demanding conditions. This set is specifically sized at 0.010 inches undersize, meaning it's intended for use with a crankshaft that has been machined down by that amount to correct for wear or to achieve a specific clearance.

This set includes bearings for all the connecting rods in your Ford V8. ACL has a solid reputation for producing well-built engine components, and this Race Series line is a popular choice for builders who want reliable performance. If you're already planning on machining your crankshaft, these bearings are the perfect complement to ensure your engine rebuild is done right.