Dayco Engine Harmonic Balancer P/N:PB1785N
Dayco PB1144SS harmonic balancer for the 1968-1974 Cadillac Calais V8 7.7L and other vehicles dampens the twisting vibration of the crankshaft. Also called an engine harmonic balancer, it works against the vibration pulses created each time a cylinder fires.
A wobbling pulley, a cracked or shifted ring, or vibration at the front of the engine can mean the balancer is worn. A loose or worn accessory belt, a failing accessory bearing or a loose crankshaft bolt can produce similar noise and vibration, so pin down the source before you buy a balancer. Each engine takes one, so a single listing covers it.
Other applications include the 1968-1974 Cadillac Commercial Chassis V8 7.7L and the 1968-1974 Cadillac DeVille V8 7.7L. Driving a different Cadillac? Look up your own year and model in the "Vehicles it fits" section.
Fit and size
Build and materials
One harmonic balancer. Mounting hardware, a woodruff key and installation instructions are not included; plan on new bolts, since the old ones may not be reusable.
This part cross-references / interchanges with the following part numbers:
Does the Dayco PB1144SS harmonic balancer fit a 1968-1974 Cadillac DeVille V8 7.7L?
Yes. The Dayco PB1144SS fits the 1968-1974 Cadillac DeVille V8 7.7L, and each engine takes one balancer.
Does the PB1144SS balancer come with bolts and a woodruff key?
No. The Dayco PB1144SS comes by itself: hardware, a woodruff key and installation instructions are not included, so plan on new bolts.
What is the crank bore on this harmonic balancer?
The crank bore is 1.498 in (38.04 mm). The overall outside diameter is 6.000 in (152.40 mm), and the balancer has eight bolt holes.
How can I tell a harmonic balancer is wearing out?
A cracked or shifted ring, a wobbling pulley or vibration at the front of the engine can be signs of wear. Look only with the engine off and cool; a shop can test anything beyond that.
Does the PB1144SS have a counterweight or integrated pulleys?
No. This Dayco PB1144SS balancer has neutral balance with no counterweight and no integrated pulleys. It does have timing marks.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.