Dayco PBU1481SS10 Engine Harmonic Balancer

Dayco Race Performance Underdrive Balancer

The Dayco Race Performance 10% Underdrive Engine Harmonic Balancer, part number PBU1481SS10, is built for performance applications that need a neutral-balanced harmonic balancer with timing marks and a single 6-groove serpentine pulley. It fits select 1993-1997 Chevrolet Camaro and Pontiac Firebird applications, along with several full-size GM V8 platforms from 1994-1996.

Key Features

• Race Performance 10% underdrive design for select GM applications
• Neutral balance with no counterweight
• Steel outer ring construction
• Integrated 6-groove serpentine pulley
• Timing marks included for setup and service work
• 3-bolt hole configuration
• Crank bore: 1.626 in. / 41.30 mm
• Overall outside diameter: 6.752 in. / 171.50 mm
• Overall width: 1.335 in. / 33.90 mm

Detailed Description

Dayco PBU1481SS10 is an engine harmonic balancer for performance-focused GM V8 applications where accessory drive speed reduction is part of the setup. The underdrive pulley configuration reduces accessory speed by 10% while retaining a serpentine belt layout, making it a direct-fit option for builders working on 1993-1997 Chevrolet Camaro, 1993-1997 Pontiac Firebird, and select 1994-1996 Buick, Cadillac, and Chevrolet full-size platforms. The steel outer ring, neutral balance design, and timing marks support accurate installation and dependable crankshaft damping in race performance use.

The Dayco Race Performance 10% Underdrive line is aimed at applications where accessory load reduction and consistent belt drive geometry matter. Part number PBU1481SS10 combines a single integrated pulley with a 3-bolt mounting pattern and no crank trigger plate, hardware, or woodruff key included. This makes it a focused replacement for builders who already know their engine configuration and need a balancer that matches the listed GM fitments.

Vehicle Fitment

• Fits 1993-1997 Chevrolet Camaro, N/A
• Fits 1993-1997 Pontiac Firebird, N/A
• Fits 1994-1996 Buick Roadmaster, N/A
• Fits 1994-1996 Cadillac Commercial Chassis, N/A
• Fits 1994-1996 Cadillac Fleetwood, N/A
• Fits 1994-1996 Chevrolet Caprice, N/A
• Fits 1994-1996 Chevrolet Impala, N/A
• Fits 1994 Chevrolet Commercial Chassis, N/A

What It Helps Address

• Crankshaft vibration control in performance engine builds
• Accessory drive speed reduction for underdrive setups
• Timing reference visibility during engine service
• Replacement needs for worn or damaged harmonic balancers
• Serpentine belt drive alignment on listed GM applications

Installation Notes

Verify crank bore, bolt pattern, pulley groove count, and overall dimensions before installation. This balancer uses a 3-bolt hole pattern, a 1.626-inch crank bore, and a 6-groove serpentine pulley. Hardware, installation instructions, crank trigger/exciter plate, and woodruff key are not included, so confirm your existing engine setup and service requirements before beginning work.

Quality Assurance

Dayco manufactures this Race Performance balancer for application-specific fitment on the listed Chevrolet Camaro, Pontiac Firebird, and related GM platforms. Part number PBU1481SS10 is built with a steel outer ring and timing marks to support accurate engine assembly and service.