ATI 917345 7.07" SFI 18.1 Super Damper for GM LS1 / LS2 / LS6

Vehicle Fitment

• GM LS-series engines - LS1, LS2, LS3, LS6 (common in Camaro F-Body, GTO, etc.)

Features

• SFI 18.1 certified for competition-grade durability
• Dual-role design for supercharged or naturally aspirated setups
• 8-groove "blower" belt drive + 4-groove accessory drive
• Laser-etched 360° timing marks for precise tuning
• Internal balance configuration
• Rebuildable elastomer core increases longevity
• Black zinc-chromate finish resists corrosion
• Heavy inertia mass to control crankshaft harmonics at high RPM

Specifications

• Part Number: **ATI 917345**
• Outer Diameter: ~ 7.07"
• Groove Count: 8 (supercharger) + 4 (accessory)
• Balance Type: Internal
• Shell Material: Steel
• SFI Rating: 18.1
• Degree Markings: 360°

Included Components

• 1x ATI 917345 Super Damper (steel shell, 8+4 groove)

Product Description

The **ATI 917345 Super Damper** is engineered for high-performance GM LS-series engines, including the LS1, LS2, LS3, and LS6. Its heavy-mass design effectively suppresses torsional crankshaft vibrations, helping improve engine longevity and reliability under high-power or boosted conditions.

This damper features a dual-groove configuration: an 8-rib drive for supercharger belt systems and a 4-rib groove for standard accessories. The laser-etched 360° timing marks assist in precise ignition tuning, while the internal balance design keeps things simple and effective. Built with a steel outer shell and a robust elastomer core, it is both durable and rebuildable.

Rated to SFI 18.1, this damper is suitable for both street and competition use. The black zinc-chromate finish provides a rugged, race-ready look, making it a reliable choice for engine builds pushing high RPM with or without forced induction.