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Big Block Mopar 7″ Super Duty Harmonic Damper #307

$555.00 – $635.00

This Big Block Mopar Harmonic Balancer exceeds SFI 18.1 ratings and is designed specifically for High Performance Chryslers.

This damper provides a stock bolt pattern, but has been upgraded with 3/8″ diameter pulley bolt holes for power adder usage. Due to damper design, will not align with OEM pulleys. Flying magnet conversion will fit passenger side only.

  • Outer Diameter: 7″
  • Weight: 8.2 lbs
  • 6 Bolt, 3/8″ Diameter stock Pulley Pattern
  • 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. This is a labor option for new damper purchase only.

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. This is a labor option for new damper purchase only.

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. This is a labor option for new damper purchase only.

SKU: N/A Category:
Damper Installation Instructions [PDF Format].
Damper Hub Honing Instructions [PDF Format].
Harmonic Damper Installation YouTube Video

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