Dayco PBO81480SC10 Engine Harmonic Balancer

Overview of Dayco SC Performance 8 Rib 10% Overdrive Harmonic Balancer

The Dayco SC Performance 8 Rib 10% Overdrive Engine Harmonic Balancer (Part Number PBO81480SC10) is engineered for Chevrolet Camaro, Pontiac Firebird, and GTO models. Designed to provide precise crankshaft vibration dampening, this harmonic balancer supports engine longevity and performance.

• Compatible with Chevrolet Camaro, Pontiac Firebird, and GTO
• 9 bolt holes for secure mounting
• Neutral counterweight balance with no counterweight
• Steel outer ring for durability
• Two integrated serpentine pulleys with 4 and 8 grooves
• Includes installation instructions
• Timing marks for accurate engine timing
• Overall outside diameter of 8.229 inches (209.00 mm)
• Overall width of 3.926 inches (99.70 mm)

Details on the SC Performance 8 Rib 10% Overdrive Product Line

The SC Performance 8 Rib 10% Overdrive line by Dayco is designed to enhance engine accessory drive efficiency by increasing pulley diameter by 10%, resulting in optimized overdrive performance. This product line focuses on delivering reliable harmonic balancing while accommodating serpentine belt configurations with multiple grooves, suitable for performance-oriented Chevrolet and Pontiac engines.

Technical Specifications and Features

This harmonic balancer features a crank bore diameter of 1.481 inches (37.60 mm) and a nose outside diameter of 2.128 inches (54.05 mm). It includes two integrated serpentine pulleys: the first pulley has 4 grooves with a diameter of 7.087 inches (180.00 mm), and the second pulley has 8 grooves with a diameter of 8.087 inches (205.40 mm). The steel outer ring ensures durability under engine stress, while the neutral counterweight balance maintains engine smoothness without additional counterweights. Timing marks are included to assist with precise engine timing adjustments.

Applications and Problem Solving

• Reduces crankshaft vibration to prevent premature engine wear
• Supports serpentine belt drive systems with multiple accessory pulleys
• Improves accessory drive efficiency with 10% overdrive pulley sizing
• Maintains engine timing accuracy with integrated timing marks
• Compatible with performance engines in Chevrolet Camaro, Pontiac Firebird, and GTO

Installation Notes and Tips

The harmonic balancer comes with installation instructions to guide proper mounting. Note that hardware is not included, so ensure you have the correct bolts for the 9 bolt hole configuration. The balancer does not include a Woodruff key, so verify compatibility with your crankshaft keyway. Proper alignment of timing marks during installation is critical for engine timing accuracy.

Quality Assurance and Warranty

Dayco manufactures this harmonic balancer with high-quality steel materials and precise engineering standards. Installation instructions are included to support correct fitment and function. Warranty details should be confirmed with the manufacturer or distributor, as they may vary by region.