What does '.10mm undersize' mean for these bearings?

This means the bearings are manufactured to be 0.10 millimeters smaller in diameter than the standard size. This is necessary when the crankshaft journals have been machined down to this specific size during an engine rebuild to correct wear or damage.

What is trimetal construction?

Trimetal bearings have three layers: a steel backing for strength, a copper-lead alloy for load carrying, and a soft overlay (like babbitt) for embeddability and conformability. This layered design helps them withstand high loads and temperatures while maintaining a good oil film.

Do I need to buy anything else to install these bearings?

You will need engine assembly lubricant to coat the bearings before installation. It's also critical to follow the manufacturer's recommended torque specifications for the connecting rod bolts and to ensure proper oil clearance measurements are taken.

ACL Trimetal Rod Bearing Set 8B745P-10

Name: ACL 1955-1967 Chevy V8 265/283/302/327 .10mm Oversized Trimetal Rod Bearing Set
Brand: ACL
Price: 45.72 USD
Availability: InStock

ACL 1955-1967 Chevy V8 265/283/302/327 .10mm Oversized Trimetal Rod Bearing Set

$45.72

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ACL Trimetal Rod Bearing Set for 1955-1967 Chevy V8 engines. .10mm undersize.

Key Features

Fits 1955-1967 Chevrolet V8 engines (265, 283, 302, 327).
Trimetal construction for durability and load capacity.
Bearings are .10mm undersize for use with machined crankshafts.
Designed for optimal oil film formation.
Includes rod bearings for a complete set.

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Will this fit your vehicle?

Product Details

Already rebuilt the bottom end of your classic Chevy V8? This ACL rod bearing set is the next piece of the puzzle. These bearings are designed for Chevy 265, 283, 302, and 327 cubic inch V8 engines from 1955 through 1967. They are .10mm undersize, which is crucial if your crankshaft has been machined down to match this size during a rebuild.

ACL uses a trimetal construction for these bearings, which means they have three distinct layers. This design helps them handle the high loads and temperatures found in performance V8 engines. The trimetal material offers good embeddability and conformability, allowing the bearing to adapt to the crankshaft journal for a solid oil film. This set is specifically sized to be .10mm undersize, ensuring a proper fit on a machined crankshaft.

This set includes rod bearings for your Chevy V8. Make sure to check your crankshaft's journal size after machining to confirm you need the .10mm undersize bearings. Always refer to your engine's service manual for proper installation procedures and torque specifications.