Big Block Ford 7 Inch Super Duty Harmonic Damper with Boss Length Crank Snout #218

$555.00 – $720.00

Designed specifically for 460 Big Block Ford High Performance engines with the Boss Length 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.

  • Outer Diameter: 7″
  • Weight: 9.1 lbs
  • BBC Style 6 bolt Dual Pulley Pattern
  • Uses Boss Length Crank Snout (no spacer)
  • Exceeds SFI 18.1 standards and is marked on front with SFI Sticker, and on the rear with SFI number stamped into unit.

Options

Double 3/16" Keyway Add On

Add an additional 3/16 Keyway to your Damper. Required the crankshaft to be machined for a second keyway 180* out from the original keyway. *Requires damper purchase.

3/16" x 1/4" Keyway Add On

Add an additional 1/4" Keyway to your Damper. Required the crankshaft to be machined for a second keyway 180* out from the original keyway. (Requires a Blower/Super Duty Hub or BBC Crank Snout) *Requires damper purchase.

Double 1/4" Keyway Add On

Dual  1/4" Keyways (Requires a Blower/Super Duty Hub or BBC Crank Snout) Required the crankshaft to be machined for a second keyway 180* out from the original keyway. *Requires damper purchase.

SBF Blower Hub Oil Seal

SBF/BBF Ford Blower Hub Crankshaft Oil Seal #983

Crankshaft Oil Seal for Blower Hub Applications, fits Small or Big Block Ford with Stock Style Timing Chain Cover.

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Damper Installation Instructions [PDF Format].
Damper Hub Honing Instructions [PDF Format].
Harmonic Damper Installation YouTube Video