ATI Harmonic Balancer - Crank Pulley

The ATI Ford GT Super Damper is the only damper designed exclusively for high performance Ford engines. The ATI damper is slightly larger than the factory pulley 7.425" vs. 7.120" so the supercharger will make more boost than current levels.  The ATI damper reduces rotational weight by over 10lbs!!!!! Eliminates torsional crankshaft vibrations Exceeds SFI 18.1 specs Black zinc chromate finished Tunable, rebuildable, and extremely efficient at ALL RPM Laser engraved timing marks Inner and outer shells in steel contain a steel inertia weight. This inertia weight has six (2-ring design) or eight (3-ring design) computer machined grooves to retain the proper durometer O-rings (dyno tested for each application). **The ATI damper requires a modified oil pump pulley. You can send in your pulley for modification or you can purchase a modified pulley is available with a core charge ($400) which is refunded upon return of your stock pulley.  ** The ATI damper is made to order with a 4-6 month build time.