What does '0.60mm oversized' mean for these main bearings?

This means the bearings are manufactured to be 0.60mm larger in diameter than the standard factory size. They are designed to be used when the crankshaft journals have been machined down by 0.60mm to match this bearing size, ensuring proper oil clearance and a snug fit.

What is trimetal construction?

Trimetal construction refers to a layered bearing material, typically consisting of steel backing, a bronze-nickel intermediate layer, and a lead-tin-copper overlay. This design offers excellent strength, good embeddability for debris, and improved heat dissipation compared to simpler bearing types.

Do these bearings come with new bolts or seals?

This kit includes the main bearings only. It does not include crankshaft bolts, main cap bolts, or crankshaft seals. You will need to source those separately if your engine rebuild requires them.

ACL 1967-1998 Chevy V8 267/305/327/350 .60mm Trimetal Oversized Main Bearing Set

Specifications

Brand: ACL
Part #: 5M909P-60
UPC: 84777700687

ACL 1967-1998 Chevy V8 267/305/327/350 .60mm Trimetal Oversized Main Bearing Set

Name: ACL 1967-1998 Chevy V8 267/305/327/350 .60mm Trimetal Oversized Main Bearing Set
Brand: ACL
Price: 47.24 USD
Availability: InStock

$47.24

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Fits 1967-1973 Chevy Camaro. ACL V8 main bearing set, 0.60mm oversized, for engine rebuilds.

Key Features

Fits 1967-1973 Chevrolet Camaro, 1969-1974 Chevrolet C10 Pickup, and 1962-1967 Chevrolet Impala.
Designed for Chevy V8 engines with 267, 305, 327, and 350 cubic inch displacements.
Trimetal construction offers improved durability and heat management for engine longevity.
Main bearings are 0.60mm (.024") oversized, intended for use with machined crankshaft journals.
This is a complete set for a V8 engine rebuild.

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Fits these vehicles

Chevrolet C10 Pickup 1969-1974
Chevrolet Camaro 1967-1973
Chevrolet Impala 1962-1967

Product Details

You get a full set of trimetal main bearings, precisely 0.60mm oversized, in this kit. This means you have the right components to properly seat your crankshaft during an engine rebuild for your Chevy V8. These bearings are built to handle the demands of engines displacing 267, 305, 327, or 350 cubic inches, covering a wide range of classic Chevy applications from 1967 through 1998.

ACL uses a trimetal construction for these bearings, which is a well-built standard for performance and durability in performance engine builds. This layered material helps manage heat and provides a solid surface for the crankshaft to rotate against, reducing friction and wear. Because they are 0.60mm oversized, they are intended for use when the crankshaft journals have been machined down to match this size, ensuring a snug and correct fit for optimal oil clearance and engine longevity.

When rebuilding your V8, ensuring the crankshaft has the correct support is critical. This set is designed to fit a variety of Chevrolet vehicles including the C10 Pickup, Camaro, and Impala within their specified years. Always confirm your crankshaft journal size matches the 0.60mm undersize before installation.