What does 'STD' mean for these main bearings?

STD stands for standard size. This means the bearings are designed to fit a crankshaft that is still within its original factory dimensions. If your crankshaft has been machined undersize due to wear, you will need a different bearing size.

What is the material of these ACL main bearings?

These ACL bearings are constructed from a tri-metal material. This type of material is chosen for its balance of strength and wear resistance, which is important for handling the heavy loads on a crankshaft.

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

Main bearings support the crankshaft within the engine block. They allow the crankshaft to rotate smoothly while maintaining precise clearances, which is critical for engine performance and longevity.

Specifications

Brand: ACL
Part #: 4M1454A-STD

ACL Chevrolet V6 200-229-262 1978-98 Engine Crankshaft Main Bearing Set

Name: ACL Chevrolet V6 200-229-262 1978-98 Engine Crankshaft Main Bearing Set
Brand: ACL
SKU: acl-acl-chevrolet-v6-200-229-262-1978-98-engine-crankshaft-main-bearing-set-t14-630492
Price: 26.65 USD
Availability: BackOrder

$26.65

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ACL Chevrolet V6 200-229-262 1978-98 Engine Crankshaft Main Bearing Set. Direct fit for many V6 engines.

Key Features

Fits Chevrolet Astro, C1500, Camaro, Caprice, Malibu, Monte Carlo, and S10 V6 engines from 1978-1998.
Standard size (STD) bearings for use with factory-spec crankshaft journals.
Tri-metal construction offers strength and wear resistance.
Designed to meet original equipment specifications for your V6 engine.
Replaces original equipment main bearings for a complete bottom-end rebuild.

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About this part

Product Details

You get a full set of main bearings in this kit, which means one box handles the critical bottom-end engine rebuild. These ACL bearings are built to replace the original equipment bearings in your Chevrolet V6 engine, covering displacements from 200 to 229 cubic inches. Proper main bearing function is essential for keeping your crankshaft spinning smoothly and within its intended tolerances, which directly impacts engine longevity and performance.

ACL has been making engine bearings for a long time, and these are well-built replacements designed to meet factory specifications. They are made from a tri-metal material that offers good strength and wear resistance, crucial for handling the loads placed on the crankshaft. This set is the standard size (STD), meaning it's intended for use when the crankshaft journals are still within their original factory dimensions. If your crankshaft has been machined undersize due to wear or damage, you would need a different bearing size.

This set is a solid option for anyone rebuilding a V6 engine from 1978 through 1998. Make sure to follow the manufacturer's installation instructions carefully, including proper cleaning of the crankshaft and block surfaces, and using the correct torque specifications during assembly to ensure these bearings perform as intended.