What does the 0.010 inch undersize mean for these bearings?

The 0.010 inch undersize indicates that these bearings are designed for a crankshaft that has been machined down by 0.010 inches. This is typically done to correct wear or to achieve specific oil clearances in a performance engine build.

Are these bearings suitable for a stock engine rebuild?

While these are Race Series bearings built for performance, they can be used in a stock rebuild if the crankshaft has been machined to the 0.010 inch undersize. However, their design is optimized for higher stress applications than a typical daily driver.

What is the material construction of these bearings?

These ACL Race Series bearings feature a tri-metal material construction. This type of material is known for its excellent strength and ability to withstand high loads and operating temperatures commonly found in performance engines.

ACL Connecting Rod Bearing Set 8B663HD-010

Name: ACL Chevrolet V8 305-350-400 Race Series Engine Connecting Rod Bearing Set
Brand: ACL
SKU: acl-acl-chevrolet-v8-305-350-400-race-series-engine-connecting-rod-bearing-set-t14-631088
Price: 152.70 USD
Availability: BackOrder

ACL Chevrolet V8 305-350-400 Race Series Engine Connecting Rod Bearing Set

$152.70

On Backorder

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

ACL Chevrolet V8 305-350-400 Race Series Engine Connecting Rod Bearing Set

Key Features

Fits 112+ vehicle make/model combinations.
ACL Race Series connecting rod bearings for Chevrolet V8 305-350-400 engines.
Tri-metal material construction for strength and high load capacity.
0.010 inch undersize for use with machined crankshafts.
Designed for performance applications and increased engine stress.

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Will this fit your vehicle?

Product Details

Already running a built V8 for your Chevrolet, Buick, or Cadillac? This set of ACL Race Series connecting rod bearings is the next piece of the puzzle for a strong bottom end. These bearings are specifically made for performance applications, offering a more robust design than stock replacements. They are built to handle the increased stress and heat that comes with a performance engine build, whether you're running a 305, 350, or 400 small-block Chevy.

ACL has a solid reputation for making well-built engine bearings, and this Race Series set is no exception. They feature a tri-metal material construction that's known for its strength and ability to handle high loads. The 0.010 inch undersize means these are intended for crankshafts that have been machined down by 0.010 inches to correct for wear or to achieve specific clearances. This is a common practice in performance engine rebuilding to ensure optimal oil clearance and bearing performance.

When you're building an engine that needs to perform, the details matter. These ACL bearings are a popular choice for enthusiasts looking to ensure their engine's longevity and reliability under demanding conditions. Make sure to check your crankshaft's dimensions and the manufacturer's recommended oil clearance specifications before installation.