Quote:
Originally Posted by Too Many Projects
Yes, the part number I posted is for 1967-68 3 groove cast pulleys used with short water pump configuration. As far as I can come up with from research, they will work for 1965-66 also, but not correct part number.
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3869978 is the correct original part number for all 65 Z16's (which all had PS), for all 66 L78's (regardless of whether the car had PS or not - if the car doesn't have PS then the third groove is just empty - don't ask me why they didn't use a 2-groove pulley), and for 67 L78's with PS.