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 handling the immense forces generated during combustion, preventing excessive wear on both the crankshaft and the block.

What does 'H-Series' mean for these Manley bearings?

The 'H-Series' designation typically refers to Manley's specific design and material composition for these bearings. In this case, it indicates a tri-metal construction engineered for improved performance and durability in demanding applications.

Are any special tools or procedures needed for installation?

Proper installation is critical for the longevity of main bearings. Always refer to the Manley installation guide for specific details on cleaning, lubrication, and torque specifications. Engine assembly requires a clean environment and careful attention to detail.

Specifications

Brand: Manley Performance
Part #: 33040H
UPC: 807298078120

Manley Main Bearing, BBC 454 MAIN BEARINGS H - SERIES

Name: Manley Main Bearing, BBC 454 MAIN BEARINGS H - SERIES
Brand: Manley Performance
SKU: manley-performance-manley-main-bearing-bbc-454-main-bearings-h-series-t14-881359
Price: 215.85 USD
Availability: BackOrder

$215.85

On Backorder

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

Manley Performance BBC 454 H-Series main bearings. These well-built bearings are crucial for engine longevity.

Key Features

Manley H-Series main bearings fit Chevrolet Big Block 454 engines.
Features a tri-metal construction for enhanced durability and load capacity.
Designed to support the crankshaft and ensure smooth engine operation.
Crucial for preventing wear on the crankshaft and engine block.
Well-built components from Manley Performance for engine rebuilds.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

Secure CheckoutFast Shipping631-982-0042

About this part

Product Details

The H-Series main bearings from Manley Performance are built with a specific tri-metal construction, a blend of materials chosen for its ability to handle high loads and maintain lubrication under demanding conditions. These bearings are designed for Chevrolet Big Block 454 engines, playing a critical role in supporting the crankshaft and ensuring smooth rotation. Proper main bearing function is essential for the overall health and performance of your engine, preventing excessive wear and potential damage to the crankshaft and block.

Manley has a reputation for making solid engine components, and these H-Series bearings are no exception. The tri-metal design offers improved durability compared to standard bearings, making them a popular choice for rebuilds where reliability is key. When you're assembling your engine, ensuring the crankshaft is properly supported by well-made main bearings like these will contribute significantly to the longevity of your build.

When installing these bearings, it's important to follow the manufacturer's recommended procedures for cleaning and lubrication. Cleanliness is paramount during engine assembly to prevent any debris from compromising the bearing surfaces. Refer to the Manley installation guide for specific details on proper installation.