Specifically designed for Extreme Duty Boosted Applications on the Big Block Chevy, 481X or Hemi engines utilizing an RCD Crankshaft Hub, this Damper exceeds SFI 18.1 ratings and is designed specifically for Blower or Turbo Applications making over 2000 hp. This non-scribed damper does not have timing marks and is intended for use with the RDC timing wheel mounted to the RCD hub.

• Outer Diameter: 7″
• Damper Thickness: 1.50″
• Damper Bolt Hole Pattern: 6 x 3/8″ on 2.782″ DBC  Dual Big Chevy 
• Damper Through Hole Diameter: 2.000″    RCD & Blower Register 
• Weight: 6.9 lbs
• Exceeds SFI 18.1 standards and is marked on front with SFI Sticker, and on the rear with SFI number stamped into unit.