ATI LS1 7.500 Harmonic Damper - SFI 18.1 Certified 4704021-20-L 1975-1977 GMC Sprint

1975-1977 GMC Sprint

Maintains very high flow even at boosted fuel pressures

Weld-On Chassis Mount

Tire Prep Stand

Wideband Controller

ATI LS1 7.500 Harmonic Damper - SFI 18.1 Certified 4704021-20-L 1975-1977 GMC SprintThe patented ATI Super Damper is the only crankshaft damper designed exclusively for high performance Chevy engines. 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. Product Description: Harmonic