6.75″ SBF 28 Oz. Externally Balanced “BDS” Roots Blower Damper #225×28

$585.00$660.00

The #225×28 damper is designed for use in 28 Oz. externally balanced SBF engines. The damper utilizes the 2.760″ BDS Roots blower bolt pattern with a 2″ Male pulley register. This damper is designed to have a root supercharger crank pulley bolted directly to the damper. An accessory pulley can also be used, but it must have the same root blower bolt pattern and register size. The #225 damper comes standard with the thicker blower hub and comes with a matching front timing cover oil seal.

  • Outer Diameter: 6.75″
  • 28 Oz. External Balance
  • “BDS” Roots blower 6-bolt bolt pattern (2.760″)
  • Exceeds SFI 18.1 standards and is marked on front with SFI Sticker, and on the rear with SFI number stamped into unit.
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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.

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