Big Block Chevy V8 Internally Balanced, 7-1/4" Diameter Harmonic Balancer 

Marine Harmonic Balancer
Big Block Chevy V8 Internally Balanced, 7-1/4" Diameter

• Material: Steel
• Finish: Black Zinc
• Keyway: Single (3/16")
• Bore Dia. Min/Max: 1.599 / 1.600
• Degree Marking Range: 50 BTDC to 10 ATDC
• OD: 7-1/4"
• Length: 2.685
• Engine Balnce: Internal

The inertia ring inside Fluidampr shears through a thin film of highly viscous silicone fluid to effectively control harmonic vibration at all engine speeds. Silicone fluid is a very good damping medium because it is relatively unaffected by temperature changes. Thus, it provides consistent damping in both winter and summer. The fluid does not harden or change viscosity if Fluidampr is not used for a period of time. The fluid is so durable that big rig, 18 wheeler truck engines are mostly all equipped with viscous fluid-type dampers. Silicone fluid’s damping capability is unmatched. That’s why the fluid inside Fluidampr is guaranteed for as long as you own it.