What does 'undersize' mean for this crank hub?

An undersize component is manufactured to be slightly smaller than the standard size. This is often used in engine rebuilding to achieve precise clearances with other internal parts, especially when components have been machined or resurfaced.

What type of Chevy Big Block engines is this designed for?

This crank hub and inner shell is specifically intended for Chevy Big Block engines that utilize an internal balance configuration and require six pulley holes for accessory drives.

What material is this crank hub made from?

The crank hub and inner shell is constructed from steel, providing a strong and reliable component for the engine's rotating assembly.

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Specifications

Brand: ATI
Part #: ATI916891U
UPC: 800157023859

ATI Crank Hub & Inner Shell - Steel - Undersize Chevy BB Int Bal 6 Pulley Holes

Name: ATI Crank Hub & Inner Shell - Steel - Undersize Chevy BB Int Bal 6 Pulley Holes
Brand: ATI
SKU: ati-ati-crank-hub-inner-shell-steel-undersize-chevy-bb-int-bal-6-pulley-holes-t14-361078
Price: 202.75 USD
Availability: BackOrder

$202.75

On Backorder

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

ATI Crank Hub & Inner Shell - Steel - Undersize Chevy BB Int Bal 6 Pulley Holes. A well-built steel component for your engine.

Key Features

This is an undersize crank hub and inner shell.
Constructed from durable steel for strength.
Features six pulley holes for accessory drive setup.
Designed for Chevy Big Block internal balance applications.

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About this part

Product Details

This ATI crank hub and inner shell is made from steel, offering a solid foundation for your engine's internal balance. It's designed to be undersize, which is crucial when you're rebuilding or working on the internal balance of a Chevy Big Block engine. The six pulley holes mean it's set up to accommodate a specific pulley arrangement, ensuring proper accessory drive function.

When you're dealing with the critical components of an engine's rotating assembly, precision matters. This steel hub is well-built to handle the stresses within the engine, contributing to smoother operation and reliable performance. Its undersize nature is a specific feature for certain engine builds where precise clearance adjustments are needed for the internal balancer.