ATI SFI 7.48 Harmonic Damper - 6-Groove - LS3 RS00400315 1974-1975 Chevrolet Bel Air

1974-1975 Chevrolet Bel Air

Incredibly long spark duration

1-1/8 in Hex Head

Uses Latch & Link to Secure Top Bar

The palms are high grip

ATI SFI 7.48 Harmonic Damper - 6-Groove - LS3 RS00400315 1974-1975 Chevrolet Bel AirProduct Description: Harmonic Balancer Super Damper 7. 480 in OD SFI 18. 1 Steel Black Oxide Internal Balance GM LS Series Sold Individually ATI Performance Products is a company founded on innovation, precision and service. ATI harmonic Super Dampers add horsepower and torque to race, street and truck engines. ATI Performance Products is the creation of over 40 years of Transmission and performance component manufacturing and racing experience.