Quote:

Hmm I ran the PN on the pulley and it came up 72-79 and it was installed on a 70 B body 318 with air. I would have not thought it was replaced anytime in its life based on my knowledge of the car but I guess anything is possible.
Sould be number 3418928



Better re-read what you wrote. You have a 70 car and the pulley is from a 72-79 and you are saying it was not replaced?????????????