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I have the eleven bolt water pump on a non ac car originally came with 2 piece harmonic balancer . I have a newer style one piece very nice aftermarket balancer but it wont work with the pulley im currently using the bolt pattern is different for the pulley .Does anyone know exactly what part I need ?:confused anyone have one for sale?
 

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There were a gazillion different pulley sets used on these cars... in 1969 alone there were like 4 or 5 different water pump pulleys. To figure it out, we'll need to know exactly what year you've got including the year of all the bracketry, is it a/c or not, power steering or not, which specific balancer you're running, etc.

Bear
 

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look in the gto resto book and they have all the different set ups and part numbers you can figure out what you need and what you got.what year and engine is in your car.
 
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