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Hybrid retrofit system viability?

Randy S on Mon March 08, 2010 9:10 PM User is offline

Year: 1972
Make: Chevrolet
Model: Camaro
Engine Size: LS1
Refrigerant Type: R-134

I'm working on retrofitting an 2000 Trans Am LS1 dropout into a 1972 Camaro. My question is whether I can re-use the 1972 evaporator with the late model compressor and condensor? I can see o-ring changes, getting some lines made up, and presume the POA valve would have to go in lieu of a pressure switch? Not sure what else I'm up against. Thoughts and guidance appreciated.

JACK ADAMS on Tue March 09, 2010 10:11 AM User is offline

Well you’re on the right track. A POA eliminator will be needed as well as a new drier and expansion valve. You will also need to use a PFC if you are using 134a refrigerant. All lines will have to be remade to fit all the new components. You will also need to Flush the old evaporator for a clean environment for the new parts. Hope this helps and good luck..

Oh almost forgot, the high pressure cut off switch..

Randy S on Tue March 09, 2010 10:30 AM User is offline

Very good, thanks for the guidance! Is the OEM 2000 Trans Am condensor parallel flow or is that an aftermarket item?

JACK ADAMS on Tue March 09, 2010 12:18 PM User is offline

Yes it will be a PFC style but need to make sure it has been kept clean from the elements (weather) and debris.

mk378 on Thu March 11, 2010 1:04 PM User is offline

You should have a V7 compressor with the Trans Am engine package. That is ideal for your situation because it is a variable compressor-- a modern high performance setup that works similar to a POA. Remove the POA and fit a straight run from the evaporator to the compressor. You don't need any switch on the low side. If you buy a POA eliminator as part of the setup, just use it as an adapter pipe and don't wire up the switch. The high side needs a trinary (combi high/low cutoff) switch to protect against overpressure or total loss of refrigerant. In normal operation, the variable system's compressor will not cycle. It should run nice and smooth and cold for you.

Edited: Thu March 11, 2010 at 1:16 PM by mk378

Randy S on Thu March 11, 2010 8:20 PM User is offline

Great info, thanks!

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