Professional Products

Professional Products Powerforce+Plus Harmonic Damper; 6.5 in. Dia.; 1045 Steel; 90022

Engineered to Fit 100%! High Quality. Unbeatable Price!
In Stock

Technical Details:

Brand Professional Products
Product Dimensions 9 x 8.5 x 3.5 inches
Manufacturer Part# 90022
UM 1
  • Accurately Balanced
  • Closely Machined
  • Easy To Read Timing Marks
  • Engraved Marks Every 90 Degrees
  • Bonded Construction


This is an externally balanced damper with a bolt-in counterweight which can be removed for a neutral balanced rotating assembly. This damper will work on 330/350/400/403/425/455 cubic inch Olds engines. The damper features the stock Olds accessory pulley bolt pattern as well as a Big Block Chevy bolt pattern for those who may want to run a crank trigger system. Use of Chevy pulleys will require some machining to damper. Note: On 330 engines, TDC mark must be repositioned. This damper fits late 400 and 425 only. Early 400/425 engines have a different counterbalance than provided. A good balance shop can modify counterbalance to work correctly on early 400 or 425 engines. The Powerforce+Plus SFI spec race model is made of 1045 steel.

Warranty and Notice

Covered by Manufacturer's Warranty

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Return Policies

This item is covered by's Standard Return Policy

Return for refund within:30 days

Return for replacement within:30 days

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