Professional Products PowerForce harmonic dampers are extremely durable—and economically priced. They're built with a bonding process which adheres the elastomer to the I.D. of the inertia ring and the O.D. of the hub, utilizing a strong adhesive along with an improved elastomer to create a much stronger bond. PowerForce dampers also feature white, easy-to-read timing marks against a painted black background. Each unit is accurately balanced and closely machined for the correct fit. Dozens of models are available for applications from 1955 and up. Choose the size, material, finish, keyways, and other options recommended for your vehicle.

This 6 in. harmonic balancer fits 350 c.i. Small Block Chevys and only weighs 5.1 lbs. 

• For internally balanced engines
• Durable nodular iron construction
• High temperature elastomer bond
• Engraved timing marks every 90°
• Includes 60° of easy-to-read timing marks
• Rated to 10,000 RPM
• NOT SFI approved
• Internally Balanced