What is the purpose of crankshaft main bearings?

Crankshaft main bearings are located between the crankshaft and the engine block. They support the crankshaft, allowing it to rotate smoothly while bearing the engine's weight and combustion forces.

What engine size does this bearing set fit?

This ACL bearing set is specifically designed for the Chevrolet 400 cubic inch V8 engine, commonly found in your 1970-1971 Stutz Blackhawk.

Are these bearings undersized?

The part number 5M1038A-40 indicates these are standard size bearings. Always verify your crankshaft's specifications before ordering replacement bearings.

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Trusted Since 1957

Est. 1957

Specifications

Brand: ACL
Part #: 5M1038A-40

ACL Chevrolet V8 400 1970-80 Engine Crankshaft Main Bearing Set

Name: ACL Chevrolet V8 400 1970-80 Engine Crankshaft Main Bearing Set
Brand: ACL
SKU: acl-acl-chevrolet-v8-400-1970-80-engine-crankshaft-main-bearing-set-t14-632238
Price: 31.74 USD
Availability: BackOrder

$31.74

On Backorder

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

Fits 1970-1971 Stutz Blackhawk. ACL V8 400 crankshaft main bearing set. Essential for engine rebuilds.

Key Features

Fits 1970-1971 Stutz Blackhawk.
Designed for Chevrolet V8 400 engines.
ACL brand crankshaft main bearing set.
Part number 5M1038A-40.

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About this part

Product Details

Already rebuilt the top end of your Stutz Blackhawk V8 400? This ACL crankshaft main bearing set is the next piece of the puzzle for a complete engine overhaul. These bearings sit between the crankshaft and the engine block, allowing the crank to spin smoothly while supporting the engine's weight. When you're rebuilding an engine, especially one from a classic like your Blackhawk, using well-built replacement bearings is crucial for long-term reliability and performance.

ACL has been making engine bearings for a long time, and this set is made to fit your specific Chevrolet 400 small-block V8. They're designed to handle the loads and temperatures inside your engine. When you're installing these, make sure to follow the manufacturer's lubrication and torque specifications carefully. Proper installation is key to getting the most out of these bearings and ensuring your engine runs right for miles to come.