What does 'standard size' mean for these bearings?

Standard size bearings are designed to be used with a crankshaft that has not been machined undersize. If your crankshaft journals have been ground down due to wear or damage, you will need to order bearings of the appropriate undersize (e.g., 0.010" or 0.020").

What V6 engine displacements does this bearing set fit?

This set is compatible with Buick V6 engines ranging from 181 cubic inches up to 252 cubic inches. This includes common displacements like the 196ci, 231ci (3.8L), and the 252ci.

Are these bearings suitable for a performance engine build?

Yes, ACL is a well-known manufacturer of engine bearings, and this set is well-built for supporting the crankshaft. For high-performance applications, ensure your crankshaft and block are within specification and consider using a high-quality engine oil.

Specifications

Brand: ACL
Part #: 4M960A-STD

ACL Buick V6 181-196-231-252 1964-90 Engine Crankshaft Main Bearing Set

Name: ACL Buick V6 181-196-231-252 1964-90 Engine Crankshaft Main Bearing Set
Brand: ACL
SKU: acl-acl-buick-v6-181-196-231-252-1964-90-engine-crankshaft-main-bearing-set-t14-633229
Price: 27.03 USD
Availability: BackOrder

$27.03

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Fits 1975-1977 Buick Regal. ACL standard crankshaft main bearing set for Buick V6 engines.

Key Features

Fits 1975-1977 Buick Regal.
Also fits Buick Riviera (1988-1990), Buick Skylark (1978-1979), and Jeep Jeepster (1966-1967).
Standard size bearings for use with factory-spec crankshaft journals.
Designed for Buick V6 engines with displacements of 181, 196, 231 (3.8L), and 252 cubic inches.
Constructed with a tri-metal material for strength and oil retention.
Helps reduce friction and support the crankshaft during engine operation.

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About this part

Product Details

Already running a rebuilt or performance V6 engine in your classic Buick? This ACL standard crankshaft main bearing set is a crucial piece for ensuring smooth operation and longevity. These bearings sit between the crankshaft and the engine block, allowing the crank to spin freely while supporting its weight and the forces from combustion. For the 1975-1977 Buick Regal, this set is designed specifically for the 231ci (3.8L) engine, but also covers a range of other Buick V6 displacements from 1964 through 1990, including the 181, 196, and 252ci engines.

ACL has been making engine bearings for a long time, and this set is well-built to handle the demands of your engine. They are standard size, meaning they are meant to be used with a crankshaft that is still within factory specifications. If your crankshaft has been machined undersize due to wear or damage, you would need a different bearing size. These bearings are made from a tri-metal material that offers good strength and conformability, helping to maintain oil film and reduce friction. Proper installation is key, so make sure your crankshaft journals are clean and within the specified tolerances before installing these bearings.

When you're rebuilding an engine or looking to replace worn bearings, using a reputable brand like ACL helps ensure you're getting a solid part. This set is a direct fit for the specified Buick models, making installation straightforward if you're already familiar with engine assembly.