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#1 |
Registered User
Join Date: Jan 2011
Location: Quincy, FL
Posts: 533
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A/C conversion question.
Good evening all,
I picked up my parts truck today and to my surprise it has A/C. I am not sure I want to convert mine to A/C but it is nice to have a complete set up with duct work, vacuum harnesses, wiring, evap box, condensor, etc. I have 2 basic questions, first and most important is the hole in the firewall the same for the evap box as it is for the basic heater box? And second will the 89ish pancake compressor (I have the accessory plate with compressor off my son's Sierra) work with everything else 82? I assume so since it is just the pump, but not real up on A/C since they weren't on many muscle cars. Thanks in advance, Kevin |
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#2 |
BAD BOW-Silverado XST
Join Date: May 2000
Location: Senior Member from Austin, TX
Posts: 6,431
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Re: A/C conversion question.
Yes, hole is the same. Only the box in engine is bigger for the evaporator.
Yes, the pancake compressor will fit. Check if it uses a serpentine or v belt. |
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#3 |
Registered User
Join Date: Jun 2011
Location: Baytown TX
Posts: 2,219
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Re: A/C conversion question.
The firewall on a factory non-a/c truck is NOT the same as the factory a/c truck.
The fan hole is in the same spot on both but the heater core holes and the air intake hole are in different locations.
__________________
John 82 Chevy Silverado 350ci/TH350 ![]() |
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#4 | |
Account Suspended
Join Date: Aug 2007
Location: USA
Posts: 1,223
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Re: A/C conversion question.
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#5 |
Registered User
Join Date: Jan 2011
Location: Quincy, FL
Posts: 533
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Re: A/C conversion question.
mrhino,Interesting, good pictures, do you have anymore of the heater firewall bare and the A/C firewall bare for comparison. I take it the one in your build thread is the heater firewall and the pen mark is where you had to cut for the A/C.
gchemist, it is the complete accessory bracket with alt, PS and compressor, I also have the crank and WP pulleys as well, so it would be a complete serpentine set up. Thanks guys just the info I wanted, I knew they were different on some models just wasn't sure about the squares. |
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#6 |
Registered User
Join Date: Jun 2008
Location: Moss Point,Ms.
Posts: 1,439
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Re: A/C conversion question.
I did the change on my 68,C-10 and on my 78,C-10.
On both trucks,some firewall re-work is needed to make it all work. And,I have an A-6 compressor on my 82 with 454.I don't like the R-4's,DA-6,etc. Mike. ![]() |
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#7 | |
Account Suspended
Join Date: Aug 2007
Location: USA
Posts: 1,223
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Re: A/C conversion question.
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#8 |
Registered User
Join Date: Jan 2011
Location: Quincy, FL
Posts: 533
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Re: A/C conversion question.
Thank you.
Anybody else got a picture of an A/C firewall inside and/or outside? |
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#9 |
78K & 79C Jimmys
Join Date: Nov 2009
Location: Ottawa Ont CANADA
Posts: 7,901
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Re: A/C conversion question.
88 with 79 without
__________________
John 1978 GMCJimmy4X4-350/203 1979 GMCJimmy4X2-305/350 |
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#10 |
Registered User
Join Date: Jan 2011
Location: Quincy, FL
Posts: 533
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Re: A/C conversion question.
Thank you, I was referring more to a picture without the boxes in place, I should have been more clear. You can clearly see the external differences in those pictures.
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