Dayco PB1070ST Engine Harmonic Balancer

Dayco Street Performance Balancer PB1070ST

The Dayco PB1070ST Street Performance Balancer is an engine harmonic balancer built for Ford, Lincoln, and Mercury V8 applications that need controlled crankshaft damping and accurate timing reference. It features a ring-weighted counterweight balance, a cast iron outer ring, and timing marks for straightforward setup on compatible engines.

Street Performance Balancer Details

Dayco’s Street Performance Balancer line focuses on performance-oriented crankshaft vibration control for street-driven engines. The PB1070ST uses a ring-weighted design with a 6.438-inch overall outside diameter, 4.115-inch overall width, and a 1.904-inch ring width. It also includes a 1.374-inch crank bore, 1.876-inch nose outside diameter, four bolt holes, and no integrated pulley provision.

• Engine harmonic balancer for compatible Ford, Lincoln, and Mercury applications
• Ring weighted counterweight balance for crankshaft vibration control
• Cast iron outer ring construction
• Timing marks included for engine setup and service
• Four-bolt hole design
• No crank trigger/exciter plate and no integrated pulleys

Vehicle Fitment

• Fits 1970-1974 Ford Bronco, N/A
• Fits 1980 Ford Bronco, N/A
• Fits 1970-1975 Ford E-100 Econoline, N/A
• Fits 1979-1980 Ford E-100 Econoline, N/A
• Fits 1979-1980 Ford E-100 Econoline Club Wagon, N/A
• Fits 1975 Ford E-150 Econoline, N/A
• Fits 1979-1980 Ford E-150 Econoline, N/A
• Fits 1979-1980 Ford E-150 Econoline Club Wagon, N/A
• Fits 1975 Ford E-250 Econoline, N/A
• Fits 1979-1980 Ford E-250 Econoline, N/A
• Fits 1979-1980 Ford E-250 Econoline Club Wagon, N/A
• Fits 1975 Ford E-350 Econoline, N/A
• Fits 1979-1980 Ford E-350 Econoline, N/A
• Fits 1979-1980 Ford E-350 Econoline Club Wagon, N/A
• Fits 1969-1980 Ford F-100, N/A
• Fits 1969-1974 Ford F-250, N/A
• Fits 1977-1978 Ford F-250, N/A
• Fits 1980 Ford F-250, N/A
• Fits 1972-1978 Ford F-350, N/A
• Fits 1980 Ford F-350, N/A
• Fits 1970-1972 Ford LTD, N/A
• Fits 1977-1980 Ford LTD, N/A
• Fits 1970-1973 Ford Mustang, N/A
• Fits 1979 Ford Mustang, N/A
• Fits 1977-1979 Ford Thunderbird, N/A
• Fits 1980 Ford Thunderbird, N/A
• Fits 1970 Mercury Cougar, N/A
• Fits 1977-1979 Mercury Cougar, N/A
• Fits 1979 Mercury Capri, N/A
• Fits 1970-1974 Mercury Montego, N/A
• Fits 1975-1980 Mercury Monarch, N/A
• Fits 1978-1979 Mercury Zephyr, N/A
• Fits 1979-1980 Mercury Marquis, N/A
• Fits 1979-1980 Mercury Grand Marquis, N/A
• Fits 1980 Mercury Grand Marquis, N/A
• Fits 1977-1980 Lincoln Versailles, N/A
• Fits 1980 Lincoln Continental, N/A
• Fits 1980 Lincoln Mark VI, N/A

What This Balancer Helps Address

• Crankshaft vibration in street performance engines
• Timing mark visibility during ignition setup and service
• Replacement needs for worn or damaged harmonic balancers
• Fitment requirements for Ford, Lincoln, and Mercury V8 engine builds
• Front-end accessory setups that do not use an integrated pulley balancer

Installation Notes

Verify crank bore, nose diameter, bolt-hole pattern, and timing-mark orientation before installation. This PB1070ST does not include a crank trigger/exciter plate, woodruff key, hardware, or installation instructions, so confirm all required engine-specific components and service procedures before assembly. For search relevance, this part is commonly referenced for Ford Mustang, Ford F-100, and Mercury Cougar applications in the 1969-1980 model years.

Quality Assurance

Dayco Street Performance Balancer components are built for engine service applications where dimensional accuracy and timing reference matter. The PB1070ST part number is used to identify the correct balancer for the listed Ford, Lincoln, and Mercury fitments, including PB1070ST searches for classic Ford Mustang and Ford F-250 engine builds.