LS7 Corvette 8 Rib Drive
Conversion Kit with Std. Dia. Damper

Part# 994
Only $1090.00
8 Rib Drive Conversion Kit with Standard Diameter Damper for LS7 Corvette. Conversion kit includes:
18528-Rib Drive - Standard Diameter Damper
19708-Rib GM Alternator Pulley or 1088 Underdrive 8-Rib Alternator Pulley
1974GM 8-Rib Corvette P/S Pulley
1972GM 8-Rib Smooth Idler Pulley
1980Corvette 8-Rib Ribbed Tensioner Pulley
1981GM Idler Pulley Stand
Any additional aftermarket pulleys must be sourced from the manufacturer of those pulleys. Includes SFI 18.1 Harmonic Damper.


  • Dual Keyway Option - Add $20.00
    The double keyway option requires that the factory or aftermarket crankshaft be removed from the engine and a second keyway cut into the snout of the crankshaft. DO NOT run a double keyed damper on a crankshaft without the double keys. Failure to the damper hub can happen without the supporting key in the broached keyway slot. The dual keyway option is for Supercharged or Extreme Duty Applications (typically over 750 rwhp). Without the double key modification your crankshaft in these high horsepower applications can lead to the failure of the damper hub and/or the single keyway which results in damage to the damper and the crankshaft snout.


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