Chevy Big Block 

Harmonic Damper

Professional Products 80004 PowerForce harmonic damper balancer.

Fits Chev big block 396 and 427 engines.

8" Diameter.

Weights 13.51 pounds.

Nodular iron construction with the elastomer securely bonded to the hub and ring.

Accurate crank bore for proper press fit on the crankshaft.

Damper has less than .005" runout on O.D. due to high quality machining and assembly procedures.

Semi-gloss black painted finish with 60 degrees of bright white, etched, easy to read timing marks.

Also timing marks are etched every 90 degrees.


Professional Products 80004 90004 PowerForce harmonic damper Plus 8" Chevy 396 427 big block harmonic balancer 80004$99.97

Click to enlargeProfessional Products 90004 PowerForce Plus
Professional Products 90004 PowerForce Plus harmonic damper balancer.

Fits Chevy 396 and 427 big block engines.

Standard 8" diameter.

Weights 14.5 pounds.

SFI-Spec racing damper.

Both hub and inertia ring are made of tough 1045 steel.

Stainless steel machine screws for plate retention.

Accurate crank bore for proper press fit on the crankshaft.

Damper has less than .005" runout on O.D. due to high quality machining and assembly procedures.

High temperature elastomer for heavy duty racing without breakdown.

Sixty degrees of engraved bright white timing marks.

Also engraved timing marks every 90 degrees.

90004$199.97

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We will not ship to freight forwarding - expediting companies.

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