LS2 GTO 8 Rib Drive Conversion Kit with Harmonic Balancer

LS2 GTO 8 Rib Drive (1st Design)
Conversion Kit with Balancer

Part# 1043
Only $1080.00
8 Rib Drive Conversion Kit with Balancer for GTO. Conversion kit includes:
18328-Rib Drive - Standard Diameter Damper
1977LS2 GTO 8-Rib P/S Pulley - 1st Design
11010GM Offset 8-Rib Smooth Idler Pulley
1973GM 8-Rib Ribbed Tensioner Pulley
1970GM 8-Rib Alternator Pulley
Any additional aftermarket pulleys must be sourced from the manufacturer of those pulleys. Includes SFI 18.1 Harmonic Balancer.


  • Dual Keyway Option - Add $20.00
    Add dual keyways for Supercharged or Extreme Duty Applications. Requires double keyed crankshaft snout.
  • 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.


  • Exceeds SFI 18.1 standards and is marked on front with SFI Sticker, and on the rear with SFI number stamped into unit.

Application Notes