What does 'Standard Size (STD)' mean for these bearings?

Standard size bearings are meant to be used when your engine's crankshaft journals are still within the original factory specifications. If your crankshaft has been machined undersize due to wear or for performance modifications, you would need a different bearing size.

What is the difference between Race Series and standard ACL bearings?

The Race Series bearings are typically built with tighter tolerances and materials designed to withstand higher loads and stresses found in performance or racing applications. They aim to provide more consistent oil clearance under extreme conditions.

Do these bearings come with installation instructions?

While these bearings are designed as direct replacements, it is always recommended to refer to the manufacturer's installation guidelines or a factory service manual for the correct procedure. Proper installation is critical for engine longevity.

ACL Ford Prod. V8 370-429-460 Race Series Engine Crankshaft Main Bearing Set

Specifications

Brand: ACL
Part #: 5M1039HX-STD

ACL Ford Prod. V8 370-429-460 Race Series Engine Crankshaft Main Bearing Set

Name: ACL Ford Prod. V8 370-429-460 Race Series Engine Crankshaft Main Bearing Set
Brand: ACL
SKU: acl-acl-ford-prod-v8-370-429-460-race-series-engine-crankshaft-main-bearing-set-t14-632240
Price: 209.13 USD
Availability: BackOrder

$209.13

On Backorder

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

Key Features

Fits 1968-1974 Ford, Lincoln, and Mercury vehicles with 370, 429, or 460 V8 engines.
ACL Race Series main bearings are built for performance applications.
Standard size (STD) bearings for use with factory-spec crankshaft journals.
Helps maintain proper oil clearance and crankshaft support.
Well-built construction from ACL, a reputable bearing manufacturer.

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Will this fit your vehicle?

Product Details

If you're building a Ford V8 with a 370, 429, or 460 engine and pushing it hard, a solid set of main bearings is crucial. This Race Series set from ACL is built to handle the extra stress that comes with performance builds. They're designed to maintain proper oil clearance and support the crankshaft under demanding conditions, helping to prevent premature wear and ensure your engine stays running smoothly.

ACL has been making engine bearings for a long time, and this Race Series set uses their experience to offer a well-built option for performance applications. They're made to the standard size (STD), meaning they're a direct replacement for your original bearings if your crankshaft journals are still within factory specifications. This is important because if your crankshaft has been machined or worn beyond standard size, you'll need a different bearing size.

This set fits a wide range of Ford, Lincoln, and Mercury vehicles from the late 60s and early 70s. Make sure to check the fitment list to confirm it's the right set for your specific application. If your crankshaft journals are in good shape and you're looking for reliable main bearings for your performance build, this ACL set is a solid choice.