What does the CT-1 coating do on these bearings?

The CT-1 coating on these ACL main bearings is designed to help reduce friction and wear. This is particularly beneficial during the critical engine break-in period, helping to ensure a smooth start for your rebuilt engine.

Are these bearings for a worn or machined crankshaft?

No, these are standard size bearings. They are intended for use when your crankshaft journals are still within the original factory specifications. If your crankshaft has been machined undersize, you will need a different size bearing set.

What is the main function of main bearings in an engine?

Main bearings are a critical component that supports the crankshaft within the engine block. They create a low-friction surface that allows the crankshaft to rotate smoothly and efficiently, which is essential for engine operation.

ACL Ford 221/255/260/289/302 Windsor/Windsor 5.0L Standard Size Main Bearing Set - CT-1 Coated

Specifications

Brand: ACL
Part #: 5M590HC-STD
UPC: 9315726457887

ACL Ford 221/255/260/289/302 Windsor/Windsor 5.0L Standard Size Main Bearing Set - CT-1 Coated

Name: ACL Ford 221/255/260/289/302 Windsor/Windsor 5.0L Standard Size Main Bearing Set - CT-1 Coated
Brand: ACL
Price: 161.68 USD
Availability: InStock

$161.68

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ACL Ford 221/255/260/289/302 Windsor/Windsor 5.0L Standard Size Main Bearing Set - CT-1 Coated. Direct fit for many classic Ford and Mercury engines.

Key Features

Fits 1962-1968 AC Shelby Cobra, 1963 Ford 300, 1966-1968 Ford Bronco, 1962-1967 Ford Country Sedan, 1962-1967 Ford Country Squire, 1964-1967 Ford Custom, 1962-1967 Ford Fairlane, 1962-1965 Ford Falcon Sedan Delivery, 1962-1968 Ford Falcon, 1964-1969 Ford GT40, 1962-1964 Ford Galaxie 500, 1963-1967 Ford Galaxie, 1965-1967 Ford LTD, 1964-1968 Ford Mustang, 1962-1967 Ford Ranch Wagon, 1962-1967 Ford Ranchero, 1963-1964 Ford Sprint, 1964-1965 Griffith 200, 1964-1967 Mercury Caliente, 1966-1967 Mercury Capri, 1962-1968 Mercury Comet, 1967 Mercury Commuter, 1967-1968 Mercury Cougar, 1963 Mercury Country Cruiser, 1964-1968 Mercury Cyclone, 1962-1963 Mercury Meteor, 1968 Mercury Montego, 1962-1967 Mercury Villager, 1966-1967 Mercury Voyager, 1967-1968 Omega Omega, 1962-1968 Shelby Cobra, 1964-1967 Sunbeam Tiger, 1964-1966 TVR Griffith, and 1967-1968 TVR Tuscan.
Standard size bearings are designed for crankshafts that are within factory specifications.
Features ACL's CT-1 coating to help reduce friction and wear during engine break-in.
Well-built main bearings support the crankshaft and ensure smooth rotation.
Designed for Ford 221, 255, 260, 289, and 5.0L Windsor V8 engines.

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Will this fit your vehicle?

Product Details

If you're rebuilding a classic Ford Windsor V8, like the 221, 255, 260, 289, or the popular 5.0L, this standard size main bearing set from ACL is a solid choice. These bearings are crucial for supporting the crankshaft and ensuring it spins smoothly within the engine block. Getting the right bearings is key to a long-lasting engine build, especially when you're pushing the limits or just want the peace of mind that comes with well-built internal components.

ACL has been making engine bearings for a long time, and this set features their CT-1 coating. This isn't just for looks; the coating helps reduce friction and wear, especially during the critical break-in period. Since these are standard size, they're meant to be used when your crankshaft journals are still within factory specifications. If your crankshaft has been machined undersize, you'll need a different bearing size, but for a stock or lightly reconditioned crank, these fit right in.

This set covers a wide range of classic Ford and Mercury vehicles, from the early Falcons and Fairlanes to Mustangs and Cougars. Make sure to check the fitment list to confirm it matches your specific application. When you're putting an engine back together, using reliable internal parts like these main bearings from ACL is a smart move for a strong, dependable rebuild.