LSX 12-Rib Harmonic Damper for Corvette, Pontiac G8 and CTS-V - 10% Overdrive
LSX 12-Rib Harmonic Damper for Corvette, Pontiac G8 and CTS-V - 10% Overdrive

LSX 12-Rib Harmonic Damper for Corvette, Pontiac G8 and CTS-V – 10% Overdrive #8401

$670.00 – $695.00

SFI 18.1 Harmonic Damper for LS1, LS2, LS3, LS6 Corvette, Pontiac G8 & Cadillac CTS-V w/Crank Bolt. Features 12-Rib drive & 10% Overdrive Pulley. Designed for use with ATI Procharger supercharger drive system.

This damper comes standard with 3/16″ Keyway for use with aftermarket crankshafts. Complete Pulley Conversion Kit also available, see options below.

NOTE: Innovators West specific pin kit required when used with a stock non-keyed crankshaft.

  • Diameter: 8.125″
  • Weight: CALL
  • Comes with Single 3/16″ Keyway
  • Exceeds SFI 18.1 standards and is marked on front with SFI Sticker, and on the rear with SFI number stamped into unit.
  • NOTE: The Super Duty Blower Hub option is a thicker hub that provides greater resistance to hub cracking under high power supercharged applications (750 rwhp and greater). This option includes a new custom made timing cover seal to adapt the oversized hub to a stock timing cover.

Options

Crankshaft Pin Kit - LS1/LS2 Corvette

Crankshaft Pin Kit - LS1/LS2 Corvette #966

Crankshaft Pin Kit for Corvette LS1/2/3/6 Engines (not LS7).

Designed for use with Innovators West dampers. Will not work with OEM or other aftermarket dampers.

Double 3/16" Keyway Add On

Add an additional 3/16 Keyway to your Damper. Required the crankshaft to be machined for a second keyway 180* out from the original keyway. *Requires damper purchase. This is a labor option for new damper purchase only.

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GM LSX Damper Installation Instructions [PDF Format].
Damper Hub Honing Instructions [PDF Format].