SBC 6.75in Balancer Int. Balance Non-SFI

The SBC 6.75in Balancer Int. Balance Non-SFI from PRO-RACE PERFORMANCE PRODUCTS is a precision harmonic balancer engineered for small block Chevy engines running street and performance applications. This 6.75-inch balancer is designed to absorb and neutralize crankshaft vibration, extending engine life and improving drivability on both highway and recreational water-cooled power plants. Whether you're rebuilding a classic muscle engine or upgrading a modern performance build, an internal balance harmonic balancer is critical for smooth operation and longevity.

Built from durable cast iron in natural finish, this balancer features internal balance construction, meaning the counterweight mass is integrated within the balancer assembly rather than distributed externally. This design reduces overall diameter requirements and is ideal for installations with space constraints or tight engine compartments common in marine and automotive applications. The internal balance configuration eliminates the need for matching external weights and simplifies crankshaft preparation, making installation more straightforward for experienced builders and technicians.

This harmonic balancer is purpose-built for small block Chevy engines operating in street performance and non-sanctioned racing environments—note that it carries a Non-SFI designation, meaning it is not approved for SFI-sanctioned competition. Weighing 9.03 pounds with compact dimensions of 8.3 by 3.5 by 8.9 inches, it integrates seamlessly into standard small block Chevy engine bays. Installation requires proper crank key alignment and torque specifications per your engine builder's guidelines; always verify balancer compatibility with your specific year and block type before purchase or installation.