These Professional Products SFI Spec PowerForce Plus dampers provide more applications for a wider range of engines. All Professional Products PowerForce Plus dampers feature a bonding process, which adheres the elastomer to the i.d. of the inertia ring and the o.d. of the hub. Through subsequent research and development, Professional Products has perfected a new process that utilizes a stronger adhesive, along with an improved elastomer, to create a much stronger bond. Professional Products dampers all feature clear, white, easy-to-read timing marks against a painted black background. In addition, they engrave a mark every 90 degrees, which is also painted white (90 degree marks are not on small block Ford dampers). You won't find any dampers that are more accurately balanced or more closely machined for the correct fit than the Powerforce or Powerforce Plus line of high performance street or SFI Spec racing harmonic dampers.

Chevy 350 Small Block 8" SFI Harmonic Damper. These are both terrific all around high performance dampers. The 80002 makes a great damper for high performance street applications, and the 90002 is the choice for racing when you want maximum damping to protect the rotating parts as well as the timing gears, timing chain and valve train. Optimum damping means your engine will run as smoothly as possible, and you are getting accurate valve timing. An improperly dampened engine can result in premature crank failure, as well as incorrect valve timing, thus robbing your engine of power. The Powerforce street model is very similar to the much more expensive G.M. Performance malleable iron 8-inch damper except ours is made of stronger nodular iron with more timing marks.