Chevy 383 and 400 Harmonic Damper

Professional Products 80003 PowerForce harmonic damper balancer.

Fits Chevy 400 and custom built 383 externally balanced engines.

8" diameter provides maximum dampening.

An excellant replacement for the stock G.M. malleable iron damper and works great for high performance street cars as well.



Made of stronger nodular iron.

Painted a semi-gloss black with white etched timing marks.

Sixty degrees of timing marks with an additional set of marks every 90 degrees.

This damper has less than .005 runout.

Accurate crank bore for proper press fit on the crankshaft.

Very accurately balanced with a bolt in counterweight.

Racing SFI-Spec damper is available below.


Professional Products 80003 90003 Professional Products PowerForce Plus harmonic balancer 8" Chevy 383 400 harmonic balancer 80003$99.97

Click to enlargeProfessional Products 90003 PowerForce Plus
Professional Products 90003 PowerForce Plus harmonic damper balancer.

Fits Chevy 400 externally balanced and custom built 383 stroker externally balanced engines.

Measures 8" in diameter.

Weights in at 12.9 pounds.

A racing SFI-Spec damper.

Has a bolt in counterweight. Can be removed for neutral balance or custom balancing.

Made of 1045 steel with a high temperature elastomer for heavy duty racing.

Sixty degrees of white etched timing marks with an additional set of marks every 90 degrees.

Painted semi-gloss black with a red anodized ring.

Number 8-32 stainless steel machine screws.

Accurate crank bore for proper press fit on the crankshaft.

Damper has less than .005 runout.

90003$204.97

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