746 - Manual - So are you saying this is about as early as you can get in a HZ without it being a HX? that's pretty cool...
Sam - I've had one of the Davies Craig controllers before, it was great and the more I look around I think it's the best option. I liked that I could control the trigger temps. The one I had before was on a Toyota V8 which they like to run a little hotter so it was good to be able to raise the trigger temp so the fans weren't running all the time.
In the end I was able to tune it pretty much spot on so that on a hot summers day, in traffic the fans kicked in after sitting stopped for about 10-20 seconds. Then once I was moving again they turned off. The idea being you basically want the temp gauge to sit at 1 third and the fans running as rarely as possible to achieve that.
I think I've just talked myself into it
In volume production terms it is early - you can tell that by the chassis number. Pagewood pilots were built on 11th and 12th of July 1977 but they were all Statesman as Pagewood was the only plant that did Statesman bodies. The bulk of Pilots were Elizabeth and built in July also with a few in June and August. Yours was completed as a stock order on 6/9/77, it looks like the first volume HZ's at Pagewood (and Acacia Ridge) were completed on 1/9/77. It wasn't actually delivered until November 1977, but there are cars built with PSN's around yours that weren't delivered until mid 1978. Yours was a bog stock HZ Kingswood or Kingswood SL.