i was looking at a 280z to buy on craigslist, in another city. The owner send me pictures, and one was of the original window sticker. He says that it has air conditioning, but the window sticker shows that it doesn't. Can this be a dealer installed option??

The car is a 1977, four speed

Yes - it could have been Dealer Installed. AIR - it would have been the same system installed at the Factory - only with a 3 speed fan vs. a 4 speed fan (or was it 4 spd. vs 5spd?)... The Factory Systems used metal piping - and the older (240-Z) ARA/Fridgking units used rubber hoses... The Factory or Factory Type used the original vent/heater controls with no addition knob's added to the side..

FWIW,

Carl B.

wow.

thats really all i can say. thank you for your help and knowledge.

hopefully someday i can be of some help to you for something.

Carl, you were correct the first time. On the 280Z the fan was 3 speed for dealer installed, 4 speed for factory.

carl beck and sblake, in addition to the 3spd and 4spd fans, i think also that the vent selection panel has an 'A/C' choice on the far left of the panel on a factory installed system...

Yeah, I know. I posted these in another AC thread a while back: