What does '.40mm Oversized' mean for these bearings?

This means the bearings are manufactured to be slightly larger than the standard size. They are intended for use when the crankshaft's connecting rod journals have been machined down by 0.40mm to remove wear or imperfections. Using these oversized bearings helps restore the correct clearance between the rod and the crankshaft.

What is trimetal construction?

Trimetal bearings are made with three layers of material. Typically, this includes a steel backing for strength, a middle layer of bearing alloy (like copper-lead), and a thin overlay of a softer material (like babbitt) on the surface that contacts the crankshaft. This design offers a good balance of strength, conformability, and wear resistance.

Do these bearings come with installation instructions?

While these bearings are designed as direct replacements, it's always best to refer to your specific engine's factory service manual for detailed installation procedures, torque specifications, and recommended assembly practices.

ACL Trimetal Rod Bearing Set .40mm Oversize 8B527P-40

Name: ACL 1958-1980 Chrysler Prod V8 383/400/440 .40mm Oversized Trimetal Rod Bearing Set
Brand: ACL
Price: 47.31 USD
Availability: InStock

ACL 1958-1980 Chrysler Prod V8 383/400/440 .40mm Oversized Trimetal Rod Bearing Set

$47.31

On Backorder

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

ACL .40mm Oversized Trimetal Rod Bearing Set for Chrysler Prod V8 383/400/440 engines.

Key Features

Fits 1958-1980 Chrysler Production V8 383, 400, and 440 engines.
Rod bearings are .40mm oversized for use with machined crankshaft journals.
Trimetal construction offers good durability and performance.
Helps maintain proper oil clearance and pressure in rebuilt engines.
Designed as a direct replacement for stock bearings.

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Will this fit your vehicle?

Product Details

If you're rebuilding a Chrysler big block V8 like the 383, 400, or 440, these ACL rod bearings are a solid choice for getting your engine back in shape. They're designed to be a direct replacement for the original bearings, but with a crucial difference: they're .40mm oversized. This means they're intended for use when the crankshaft journals have been machined down by .40mm to clean up wear or damage, allowing you to maintain proper clearances and oil pressure.

ACL uses a trimetal construction for these bearings, which is a well-known standard for performance and durability in demanding engine applications. This layered material design helps them handle the stresses and heat generated inside your engine, providing a reliable surface for the crankshaft to spin against. Because they are precisely sized, they help ensure the correct oil film thickness is maintained, which is critical for preventing premature wear and ensuring the longevity of your rebuilt engine.

When you're putting an engine back together, getting the bearing clearances just right is key. These bearings, when paired with a properly machined crankshaft, will help you achieve those specifications. Make sure to consult your engine's service manual for the exact torque specifications and assembly procedures when installing these bearings.