SBF 6.40in Balancer Ext. Balance 28.0oz

The SBF 6.40in Balancer Ext. Balance 28.0oz from PRO-RACE PERFORMANCE PRODUCTS is a purpose-built harmonic balancer engineered for Small Block Ford engines demanding pro-street performance and reliability. This component is essential for builders and mechanics working on high-revving or modified SBF platforms where factory balancers fall short. A quality harmonic balancer isolates crankshaft vibration, protecting main bearings and extending engine life while maintaining consistent power delivery under extreme conditions.

This balancer features a 6.40-inch outer diameter with external balance weighting at 28.0 ounces, making it compatible with Small Block Ford engine blocks that require external counterweight correction. The iron construction provides durability and thermal stability in high-heat environments typical of street and strip applications. The natural iron finish resists corrosion while allowing traditional engine detailing—no coating means direct bolt-on installation without finish-related fitment issues. External balance design accommodates custom crankshaft and rotating assembly combinations, allowing tuners to dial in precise rotational harmony for optimized performance across the RPM range.

Mechanics and engine builders favor this balancer for small block Ford restorations, street rod builds, and performance engine swaps where original equipment balancers cannot match modern engine modifications. The 28-ounce external balance spec suits engines with stroker cranks, lightweight pistons, or custom crankshaft grinding where OEM balance specs no longer apply. Installation requires proper crankshaft key and bolt torque verification; this balancer pairs with serpentine belt systems and traditional pulley configurations standard on SBF platforms. Whether upgrading a vintage 289 or 302 or assembling a modern 347 stroker, this PRO-RACE balancer delivers the precision and longevity pro-street engines demand.