What is the purpose of half-groove main bearings?

Half-groove main bearings are designed to improve oil flow and maintain consistent oil pressure to the crankshaft journal. This is particularly beneficial during engine operation, helping to ensure proper lubrication.

What is the difference between full-groove and half-groove bearings?

Full-groove bearings have a groove around the entire circumference of the bearing shell, while half-groove bearings only have a groove on the upper (thrust) side. The half-groove design helps to direct oil more effectively to the crankshaft journal.

Do I need to measure my crankshaft journals before installing these bearings?

Yes, it is highly recommended to measure your crankshaft journals to ensure they are within the manufacturer's specifications for size and roundness. This will help guarantee proper bearing crush and oil clearance for optimal engine performance and longevity.

1969-1974 Ford Country Sedan Crankshaft Main Bearings

Name: ACL Ford V8 351M-351W-400 1969-98 (Half Groove) Engine Crankshaft Main Bearing Set
Brand: ACL
SKU: acl-acl-ford-v8-351m-351w-400-1969-98-half-groove-engine-crankshaft-main-bearing-t14-630515
Price: 34.93 USD
Availability: BackOrder

ACL Ford V8 351M-351W-400 1969-98 (Half Groove) Engine Crankshaft Main Bearing Set

$34.93

On Backorder

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

Fits 1969-1974 Ford Country Sedan. ACL crankshaft main bearings for Ford 351M, 351W, and 400 V8 engines.

Key Features

Fits 1969-1974 Ford Country Sedan.
Designed for Ford 351M, 351W, and 400 V8 engines.
Half-groove main bearing design helps maintain oil pressure.
Well-built materials for durability and engine longevity.
Direct replacement for your crankshaft main bearings.

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Product Details

When you're rebuilding or refreshing the bottom end of your 1969-1974 Ford Country Sedan with a 351M, 351W, or 400 V8, the crankshaft main bearings are critical. ACL's 5M1432A-10 set is built to handle the demands of these classic Ford V8s. These bearings are designed to provide a solid foundation for your crankshaft, ensuring smooth rotation and proper oil clearance.

This particular set features half-groove main bearings, which help maintain consistent oil pressure throughout the engine's rotation, especially important in performance applications or when dealing with slightly worn crankshafts. ACL uses well-built materials to ensure durability and longevity, giving you confidence in your engine's internal components. Proper installation is key, so make sure your crankshaft journals are clean and within spec before fitting these bearings.

If you're looking for a reliable replacement for your Ford V8, this ACL main bearing set is a popular choice for engine builders. Ensure your crankshaft is properly supported and lubricated for the life of your engine.