LS1, LS2, LS3, LS6 Corvette, Pontiac G8 & Cadillac CTS-V w/Crank Bolt

LSX 10% Overdrive 10-Rib with 6-Rib Accessory Drive Pulley Harmonic Damper for Corvette, Pontiac G8 and CTS-V

Part# 8404
Only $575.00

SFI 18.1 Harmonic Damper for LS1, LS2, LS3, LS6 Corvette, Pontiac G8 & Cadillac CTS-V w/Crank Bolt. Features 10-Rib drive & 10% Overdrive Pulley.

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



  • Dual Keyway Option - Add $20.00
    Add dual keyways for Supercharged or Extreme Duty Applications. Requires double keyed crankshaft snout.
  • #903 LS1/LS2/LS6 Corvette 10-Rib Conversion Kit - 10% Overdrive
    Conversion Kit Includes: Harmonic Balancer, P/S, Alt, Smooth Idler & Ribbed Tensioner Pulleys
  • LSX Blower Hub Option - Add $25.00
    The super duty hub has increased material for supercharged applications.This increased material helps to protect the hub from cracking in high load applications. The super duty hub is recommended for supercharged applications making over 750 rwhp. Includes matching timing cover oil seal.


  • Diameter: CALL
  • Weight: CALL
  • 10% Overdrive
  • 10-Rib Main Pulley
  • 6-Rib Accessory Pulley
  • Exceeds SFI 18.1 standards and is marked on front with SFI Sticker, and on the rear with SFI number stamped into unit.