What is the primary function of a crankshaft damper?

A crankshaft damper, also known as a harmonic balancer, is designed to absorb torsional vibrations from the crankshaft. These vibrations can cause stress and damage to the crankshaft and other engine components over time.

Why is the underdrive percentage important?

The 10 percent underdrive means that the accessory pulleys driven by the crankshaft damper will spin at 10 percent slower than the crankshaft itself. This can reduce the load on the engine and potentially improve efficiency, especially in performance applications.

What does '8-Groove' refer to on this damper?

The '8-Groove' designation indicates that the damper has eight separate grooves on its pulley section. This allows for the drive belts of multiple accessories, such as the alternator, water pump, and power steering pump, to be routed and driven from the crankshaft.

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Specifications

Brand: ATI
Part #: ATI917049UN
UPC: 800157064722

ATI Shell Assy - 7.73 - Alum - 8 Grv - LS7 Y Body 10 Percent UD w/O Ac

Name: ATI Shell Assy - 7.73 - Alum - 8 Grv - LS7 Y Body 10 Percent UD w/O Ac
Brand: ATI
SKU: ati-ati-shell-assy-7-73-alum-8-grv-ls7-y-body-10-percent-ud-w-o-ac-t14-361174
Price: 416.74 USD
Availability: BackOrder

$416.74

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ATI 7.73" aluminum crankshaft damper for LS7 Y Body engines. 10% Underdrive, 8-groove pulley.

Key Features

Fits LS7 Y Body engines.
7.73-inch diameter aluminum shell assembly.
Features an 8-groove pulley system.
Includes a 10 percent underdrive configuration.
Designed without air conditioning provisions.
Helps manage crankshaft torsional vibrations.

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About this part

Product Details

This is the ATI Shell Assy, a 7.73-inch aluminum crankshaft damper specifically designed for LS7 Y Body engines. It features an 8-groove pulley system with a 10 percent underdrive, and it's configured without air conditioning. This damper is crucial for managing torsional vibrations from the crankshaft, which helps protect your engine's internal components and ensures smoother operation.

Crafted from aluminum, this damper is lighter than cast iron alternatives, which can contribute to improved engine response. The 8-groove design allows for multiple accessory drives, offering flexibility for your setup. The 10 percent underdrive means your accessories will run at a slightly slower speed than the crankshaft, which can reduce load on the engine and potentially improve efficiency. This damper is a well-built component for performance-oriented LS7 applications where precise engine timing and durability are important.