What is the purpose of a crank hub and inner shell?

The crank hub and inner shell work together to provide a secure mounting point for your engine's harmonic balancer. They help ensure the balancer is properly aligned and retained, which is crucial for dampening torsional vibrations.

What does '.005 inch undersize' mean for the inner shell?

This means the inner diameter of the shell is precisely machined to be 0.005 inches smaller than a standard size. This is often used when a crankshaft has been machined or requires a slightly tighter fit for optimal performance and retention.

What type of Chevy 454 engines is this kit designed for?

This kit is specifically designed for Chevy 454 engines that use an external balance configuration. It is important to confirm your engine's balance type before installation.

Specifications

Brand: ATI
Part #: ATI916120-2U
UPC: 800157023651

ATI Crank Hub & Inner Shell - Steel - Chevy 454 - Ext Bal .005 Undersize

Name: ATI Crank Hub & Inner Shell - Steel - Chevy 454 - Ext Bal .005 Undersize
Brand: ATI
SKU: ati-ati-crank-hub-inner-shell-steel-chevy-454-ext-bal-005-undersize-t14-360675
Price: 157.94 USD
Availability: BackOrder

$157.94

On Backorder

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

Key Features

This product includes the ATI crank hub and inner shell.
Both components are made from steel for durability.
Designed for Chevy 454 engines with external balance.
The inner shell is .005 inch undersize for a precise fit.
Helps ensure proper alignment and secure mounting of the harmonic balancer.

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About this part

Product Details

This package includes the ATI crank hub and inner shell, both constructed from steel. This specific set is designed for Chevy 454 engines that utilize an external balance configuration and features a .005 inch undersize dimension on the inner shell.

The crank hub and inner shell work together to ensure proper alignment and secure mounting of your harmonic balancer. This steel construction offers a solid foundation for the critical function of dampening torsional vibrations in your engine. The .005 inch undersize specification is important for achieving a precise fit on crankshafts that may have been machined or require a slightly tighter tolerance.