What is the difference between standard size and undersize bearings?

Standard (STD) bearings are meant for crankshaft journals that are still at their original factory size. Undersize bearings, like -010 or -020, are used when the crankshaft has been machined down to correct for wear or damage. This set is standard size, so it's for a crankshaft that's still at its original diameter.

What material are these ACL Race Series bearings made from?

These bearings feature a special overlay material developed by ACL. This material is known for being tougher and more resistant to wear compared to standard bearing materials, making them suitable for higher-performance or heavy-duty applications.

Do these bearings come with assembly lube?

This product listing is for the ACL Race Series main bearings only. Assembly lube is a separate product that is crucial for proper installation and engine longevity. We recommend using a high-quality engine assembly lube when installing new bearings.

ACL Engine Bearings 5M1432H-STD for Ford V8 351M/351W/400

Name: ACL Ford V8, 351M-351W-400, Race Series
Brand: ACL
SKU: acl-acl-ford-v8-351m-351w-400-race-series-t14-489185
Price: 134.73 USD
Availability: BackOrder

ACL Ford V8, 351M-351W-400, Race Series

$134.73

On Backorder

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

ACL Race Series main bearings for Ford 351M, 351W, and 400 V8 engines.

Key Features

Fits 45+ vehicle make/model combinations, including Ford Bronco, F-150, E-Series vans, and more.
ACL Race Series main bearings are designed for increased performance and durability.
Features a special overlay material for improved wear resistance.
Standard (STD) size, intended for use with crankshafts within factory specifications.
Compatible with Ford 351M, 351W, and 400 cubic inch V8 engines.

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Will this fit your vehicle?

Product Details

Rebuilding the top end of your Ford V8, especially if you're looking for a bit more performance or durability, means paying close attention to the rotating assembly. These ACL Race Series main bearings are built for that kind of work. They're designed to handle the increased stresses that come with higher-revving engines or more powerful builds, offering a solid foundation for your crankshaft.

ACL has been making engine bearings for a long time, and their Race Series is a popular choice for folks who want something well-built beyond standard replacement parts. They use a special overlay material that's tougher and more resistant to wear than typical bearings, which is crucial when you're pushing an engine harder. This particular set is a standard size (STD), meaning it's meant to be used with a crankshaft that's still within factory specifications. If your crank has been machined, you'd typically look for an undersize bearing, but for a fresh rebuild or a crank that's in great shape, standard size is what you need.

This set fits a wide range of Ford V8 engines, including the 351M, 351W, and 400 cubic inch displacements, covering many trucks, Broncos, and even some classic cars from the late 60s through the late 80s. Make sure to check the full fitment list to confirm compatibility with your specific vehicle. When you're putting in new bearings, it's always a good idea to have the proper assembly lube on hand and follow the manufacturer's torque specifications carefully to ensure a long life for your engine.