A/C hvac

[87C10LS]

Ls swap is done. 87 Chevy r10 that is an a/c truck. All that wiring is intact. I have the upper a/c mount for the motor that will accept the Sanden or pancake style compressor. Can I use all the original A/c wiring with a newer serpentine style compressor?

 

[yevgenievich]

Yes

 

[87C10LS]

Thank you. I’ll get to work on that portion sooner than later then

 

[Charlie]

 

[Preston]

Welcome pictures please

 

[RoryH19]

That's what I'm doing for my K5 LS swap. R4 compressor from a late 80's early 90' K5 or Suburban. The HVAC switch in the cab controls the compressor directly.
Since you will need a shorter compressor hose you can use the one from the same year as the new compressor. Just get the single air option.

 

[87C10LS]

Good info. Thank you. I’ll update when I get this done. My harness has an ac wire so the computer knows when I turn the ac on and it’ll turn my low speed fan on for me.

 

[RoryH19]

I thought about having the PCM control my AC but kept it separate. I have dual electric fans so the PCM turns them on at different temps. I added another relay to turn on the higher temp fan as soon as the AC is on.

 

[yevgenievich]

On my TA ecm controls fans and ac. Stock wires tied to ecm after low pressure switch. And ecm has its own additional full range pressure switch to deal with compressor as needed