BBF 7 Inch Super Duty Harmonic Damper with Boss Length, BBC Diameter Crank Snout

Designed specifically for 460 Big Block Ford High Performance engines with the Boss Length Crank Snout and BBC Diameter Crank Snout. Meets & exceeds SFI 18.1 specification featuring an all aluminum case design for light weight, stress-proof steel hub and 1040 steel inertia rings for durability. Wet clutch friction design style with precision machined harmonic dampening for street and race engines.

Uses 6 bolt pulley (Dual BBC Bolt Pattern) and is designed with a hub that uses the Boss Length Crank Snout, it does not use a separate crankshaft spacer.

• BBC Style 6 bolt Dual Pulley Pattern


• Uses Boss Length Crank Snout (no spacer)


• Uses Big Block Chevy Diameter Crank Snout (1.600")


• Exceeds SFI 18.1 standards and is marked on front with SFI Sticker, and on the rear with SFI number stamped into unit.