Hawks Motorsports offers our clients this 990-KIT LS1/LS2/LS3/LS6 Corvette 8-Rib Drive Conversion Kit with Standard Diameter Damper, Innovators West. This complete accessory-drive conversion kit is designed for compatible Corvette LS1, LS2, LS3 and LS6 applications and converts the factory-style 6-rib drive to an 8-rib setup while retaining the standard crank pulley diameter. The kit includes an SFI 18.1 harmonic damper and the necessary accessory-drive pulleys and components.

If you're putting some serious miles and horsepower on an LS, getting more belt around the pulleys is never a bad thing. The 8-rib conversion gives the belt more contact area and is a solid move for a street car, road-race build, or boosted setup that needs a more capable belt drive. The standard-diameter damper keeps the factory-style pulley ratio, so you're upgrading the drive without changing accessory speed.

The kit uses an 842 8-rib standard-diameter harmonic damper with a 7.25-inch diameter and includes the Corvette-specific power steering, alternator, idler and tensioner pulleys needed to complete the conversion. The damper exceeds SFI 18.1 standards.

KEY FEATURES:

• Part number: 990-KIT
• Innovators West 8-rib accessory-drive conversion kit
• Designed for LS1, LS2, LS3 and LS6 Corvette applications
• 8-rib belt drive
• Standard-diameter harmonic damper
• Uses Innovators West 842 harmonic damper
• 7.25-inch damper diameter
• SFI 18.1 harmonic damper
• GM 8-rib Corvette power steering pulley
• GM 8-rib alternator pulley
• GM 8-rib smooth idler pulley
• GM idler pulley stand
• Corvette 8-rib ribbed tensioner pulley
• Complete accessory-drive conversion
• Optional Super Duty Blower Hub available
• Optional double 3/16-inch keyway available
• Optional underdrive alternator pulley available

FITMENT APPLICATIONS:

Chevrolet Corvette — LS1 / LS2 / LS3 / LS6

• LS1 Corvette applications
• LS2 Corvette applications
• LS3 Corvette applications
• LS6 Corvette applications

Innovators West identifies the 990 specifically as the LS1/LS2/LS3/LS6 Corvette 8-Rib Drive Conversion Kit with Standard Diameter Damper. The manufacturer documentation also groups these applications with Corvette, Pontiac G8 and Cadillac CTS-V accessory-drive configurations, but the 990 kit itself is specifically identified for the Corvette application.

Important: Verify the exact vehicle, engine and accessory-drive configuration before ordering. LS engines installed in other chassis or using aftermarket accessory drives may require different pulleys or additional components.

INSTALLATION NOTES:

• This listing is for one 990-KIT 8-rib drive conversion kit.
• Kit includes the harmonic damper, power steering pulley, alternator pulley, smooth idler pulley, idler pulley stand and ribbed tensioner pulley.
• The standard-diameter damper maintains the standard crank/accessory-drive ratio.
• Verify engine and accessory-drive configuration before installation.
• Verify pulley alignment and belt tracking across the complete accessory drive.
• Verify the correct 8-rib serpentine belt length and routing for the completed installation.
• The standard damper uses a single 3/16-inch keyway.
• A double-keyway option requires the crankshaft to be machined for a second keyway 180° from the original.
• Do not install a double-keyed damper on a crankshaft that has not been properly machined for the second keyway.
• A Super Duty Blower Hub option is available for high-power supercharged applications; Innovators West recommends this option for applications producing approximately 750+ rwhp.
• The optional underdrive alternator pulley is intended for high-RPM race applications and may cause charging issues at idle on street-driven vehicles.
• Use a proper harmonic damper installation tool.
• Follow the manufacturer's installation and torque specifications.
• Do not permanently install components until fitment and pulley alignment have been confirmed.