SBC 7 Inch Super Duty Blower Damper w/BBC Crank Snout

6.75 Inch AMC Harmonic Balancer w/Chevy Bolt Pattern #401

$535.00

This 6.75″ AMC Harmonic Balancer exceeds SFI 18.1 specifications and features 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.

Features Chevy bolt pattern for widely available pulleys and accessories.

  • Outer Diameter: 6.75″
  • 3.2″ BBC Bolt Pattern
  • Weight: 7.6 lbs
  • Exceeds SFI 18.1 standards and is marked on front with SFI Sticker, and on the rear with SFI number stamped into unit.

1 in stock

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.

SKU: 401 Category:
Damper Installation Instructions [PDF Format]. Damper Hub Honing Instructions [PDF Format].
Harmonic Damper Installation YouTube Video