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Rogier · 02-26-2012, 08:31 AM

I've been searching, but haven't found the answer. The 1980 (model 1981) squarebody crewcab project I'm working on has all the original heating/AC stuff in it. Now I've bought an upgraded 1996 vortec engine and this has an AC compressor on it from a 1996 C1500.

Can I just connect the old hoses to the new compressor?
Anyone have the wiring schema?
Do I need a new 'heaterbox' from a C1500 on the engine side of my firewall?

All tips and tricks are appreciated, lessons learned and pics are even better!

02-26-2012, 08:31 AM	#1
Rogier Registered User Join Date: Sep 2011 Location: Amsterdam Posts: 80	Modern AC upgrade I've been searching, but haven't found the answer. The 1980 (model 1981) squarebody crewcab project I'm working on has all the original heating/AC stuff in it. Now I've bought an upgraded 1996 vortec engine and this has an AC compressor on it from a 1996 C1500. Can I just connect the old hoses to the new compressor? Anyone have the wiring schema? Do I need a new 'heaterbox' from a C1500 on the engine side of my firewall? All tips and tricks are appreciated, lessons learned and pics are even better!