What does 'trimetal' mean for these bearings?

Trimetal bearings have three layers: a steel backing for strength, a copper-lead alloy for load carrying, and a soft overlay (like babbitt) for conformability and embeddability. This construction is well-suited for high-performance and heavy-duty applications.

When would I need oversized bearings like these?

Oversized bearings are used when the crankshaft journals have been machined undersize during an engine rebuild to remove wear or damage. These 0.01mm oversized bearings are intended for journals that have been ground down by that specific amount.

Does this set include main bearings or just rod bearings?

This specific part number, ACL 8B745P-01, is a set of trimetal rod bearings. Main bearings are sold separately and are crucial for the crankshaft's main journals.

ACL Engine Bearings 8B745P-01 - Chevy V8

Name: ACL 1955-1967 Chevy V8 265/283/302/327 .01mm Oversized Trimetal Rod Bearing Set
Brand: ACL
Price: 45.72 USD
Availability: InStock

ACL 1955-1967 Chevy V8 265/283/302/327 .01mm Oversized Trimetal Rod Bearing Set

$45.72

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ACL engine bearings for Chevy V8 265/283/302/327. Set is 0.01mm oversized.

Key Features

Fits 1955-1967 Chevrolet V8 engines (265, 283, 302, 327 cu. in.).
Set includes trimetal rod bearings.
Bearings are 0.01mm oversized for crankshaft journal correction.
Three-layer construction offers strength and conformability.
Designed to handle engine loads and temperatures.

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Will this fit your vehicle?

Product Details

ACL has been making engine bearings for decades, and this set for your Chevy V8 is one of their staples. These are trimetal rod bearings, meaning they have three layers of material to handle the high loads and temperatures found in performance V8 engines. They are specifically sized at 0.01mm oversized, which is useful if your crankshaft journals have been ground down slightly during a rebuild or to correct minor wear.

These bearings are built with a trimetal construction, which offers a good balance of strength and conformability. This means they can handle the stress of engine operation while still conforming to the crankshaft surface for optimal oil film formation. This is crucial for preventing metal-on-metal contact and ensuring the longevity of your engine, especially in applications where the engine might be pushed a bit harder than stock.

This set is designed to fit a range of classic Chevy V8 engines from 1955 through 1967, covering displacements like the 265, 283, 302, and 327 cubic inches. When rebuilding or refreshing your engine, using bearings that are properly sized and well-constructed is key to a successful outcome. Always refer to your vehicle's specific service manual for detailed installation procedures and torque specifications.