Professional Products 6.4 in. 81 Later SB Ford (50 oz. In.) 90007

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.

Ford SB 1981 6.4 Harmonic Balancer. Our SB Ford Dampers have more universal features than any other damper. All SB Ford models are made to the early short length. This allows the use of a late 5.0L engine with a 50 oz. in. damper to be used in an early chassis where front clearance is at a minimum. To fit in late vehicles, we offer a series of spacers to provide the correct front pulley alignment. These Ford dampers also have three sets of timing marks and both 3 and 4-bolt accessory pulley bolt patterns. The supplied plastic insert can be used to center 3-bolt pulleys with a female pilot, or it can be removed to accept 3-bolt pulleys with a male pilot. These dampers are very versatile and can be used on many different Ford engines.