What is the purpose of the 10 percent underdrive on this crankshaft damper?

The 10 percent underdrive (UD) ratio means the accessory pulleys driven by the damper will spin 10 percent slower than the crankshaft. This reduces parasitic drag on the engine, which can free up a small amount of horsepower and reduce the load on accessories like the alternator and water pump.

Why is an aluminum shell used for this crankshaft damper?

Aluminum is chosen for its lightweight properties, which contributes to overall vehicle performance by reducing rotational mass. It also has good thermal conductivity, helping to dissipate heat generated during engine operation, which is important for maintaining consistent damper performance.

What is the significance of the 6 & 4 groove configuration?

The 6 & 4 groove configuration offers flexibility for accessory drive setups. It allows users to configure their belt system with either six or four accessory drives, accommodating different aftermarket or custom accessory setups commonly found in performance applications.

Specifications

Brand: ATI
Part #: ATI917333
UPC: 800157079733

ATI Shell Assy - 7.48 - Alum - 6 & 4 Grv - 10 Percent UD - 2016+ LT1 Camaro Ss

Name: ATI Shell Assy - 7.48 - Alum - 6 & 4 Grv - 10 Percent UD - 2016+ LT1 Camaro Ss
Brand: ATI
SKU: ati-ati-shell-assy-7-48-alum-6-4-grv-10-percent-ud-2016-lt1-camaro-ss-t14-361307
Price: 502.34 USD
Availability: BackOrder

$502.34

On Backorder

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

ATI Crankshaft Damper 917333 for 2016+ LT1 Camaro SS. Aluminum shell, 6 & 4 groove, 10% UD.

Key Features

Fits 2016 and newer LT1 Camaro SS vehicles.
Features a 7.48-inch diameter aluminum shell for lightweight performance and heat dissipation.
Includes a combination of 6 and 4 grooves for accessory belt drive configurations.
Incorporates a 10 percent Underdrive (UD) pulley ratio to reduce accessory drag.
Designed to minimize crankshaft torsional vibrations for engine longevity.

This ATI Shell Assy is designed for 2016 and newer LT1 Camaro SS vehicles. Please verify fitment with your specific vehicle details.

Secure CheckoutFast Shipping631-982-0042

About this part

Product Details

This ATI Shell Assy, part number 917333, is built with a 7.48-inch aluminum shell, a material chosen for its lightweight properties and ability to dissipate heat effectively. This damper is specifically designed for the 2016 and newer LT1 Camaro SS, addressing the unique demands of that engine platform. It features a combination of 6 and 4 grooves for accessory drive belts, offering flexibility for various setups, and includes a 10 percent Underdrive (UD) pulley ratio. This UD ratio is a notable design choice, as it slightly slows down the speed of accessories like the alternator and water pump, which can reduce parasitic drag on the engine and potentially improve horsepower. The damper's construction is focused on providing reliable performance and durability for high-output LT1 engines.

The ATI 917333 is a well-built component designed to handle the stresses of modern performance engines. Its aluminum shell is robust, and the internal design is engineered to minimize torsional vibrations from the crankshaft. This is crucial for engine longevity, as excessive vibrations can lead to premature wear on bearings and other internal components. The combination of grooves allows for a custom fitment of accessory drives, making it a popular choice for Camaro SS owners looking to optimize their engine bay setup, whether for street use or more demanding track applications. The 10 percent underdrive is a common modification that balances accessory function with engine performance gains.

When installing this crankshaft damper, it's important to follow the manufacturer's recommended procedures to ensure proper function and longevity. This component is a critical part of your engine's harmonic dampening system, and correct installation is key to its effectiveness. Ensure you have the necessary tools and refer to the installation manual provided by ATI for specific details regarding fitment and mounting.