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#1 |
Registered User
Join Date: Jun 2014
Location: Temecula
Posts: 227
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Rehooking up unknown factory air
My c10 came originally with factory air, but before I got it, someone switched out the 350 to the 250 i6 and an A/c compressor was not present, nor was the heater core hooked up.
I have since replaced the i6 with another 350 sbc, and wound up using a serpentine belt system I pulled from a 92 1500. I also took the compressor from the 92. Now I want to hook up the heater core and see what all I need to do to get the A/C going, but I don't know where to start. Can I use the original factory air components that should be there with the newer compressor? Is it ok to mix r12 and r134a components? Which kind of compressor do I have? I have seen a few types mentioned and I dont know which is which. I put "should" in italics because I really dont know what all should be there to begin with, but from a novice, it appears complete (minus the deteriorated ducting that will need to be replaced and some hoses for the compressor to whatever). Any help you guys can provide would be great. I really don't know where to start with this one.
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71 Long bed C10 w/68 front clip, 350 SBC+HEI, TH350 06 Yukon XL Denali - Stock |
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#2 |
Registered User
Join Date: Apr 2011
Location: Klein Texas
Posts: 3,852
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Re: Rehooking up unknown factory air
The R4 compressor is completely fine for use with R134a. GM used it that way in '94 and '95 models.
You'll want to change the drier to a new one. The old desiccant in it is not compatible with R134a. There's a chance the TXV (expansion valve) is stuck from sitting with no lubrication. The POA valve will need to a pressure adjustment to work effectively with R134a. Likely, you'll want to change the hoses to the newer style (takes a little tweaking to fit with the R4 compressor) and while your at it, update the condenser to a more modern design.
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My Classics: '72 K20 Suburban + '65 Dodge Town Wagon '72 Corvette Roadster +'67 Corvette Roadster '73 Z-28 Camaro '63 Ford SWB Uni Pickup '50 Ford Coupe |
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#3 | |
Registered User
Join Date: Oct 2014
Location: Mesa AZ (Near Phoenix)
Posts: 2,302
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Re: Rehooking up unknown factory air
Quote:
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"Life is too short to drive a boring vehicle". Later, Wayne ![]() |
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#4 |
Registered User
Join Date: Jun 2014
Location: Temecula
Posts: 227
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Re: Rehooking up unknown factory air
sounds like it is doable but need to do some more research on these parts
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71 Long bed C10 w/68 front clip, 350 SBC+HEI, TH350 06 Yukon XL Denali - Stock |
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#5 |
Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,939
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Give these guy's a call. They can help you.
Classic air. Any good local AC shop should be able to get you going. I bought the hose kit from Classic air but had a local shop do all the crimping and checked everything. ![]() http://www.classicautoair.com/
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1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 ![]() Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
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#6 |
Registered User
Join Date: Jun 2014
Location: Temecula
Posts: 227
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Re: Rehooking up unknown factory air
thanks andy, i emailed them yesterday and we are in touch.
__________________
71 Long bed C10 w/68 front clip, 350 SBC+HEI, TH350 06 Yukon XL Denali - Stock |
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#7 |
Registered User
Join Date: Mar 2012
Location: Boulder, CO
Posts: 350
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Re: Rehooking up unknown factory air
You could also install an orifice tube/accumulator set-up like a 83-87, no POA to worry about, less plumbing to deal with. It looks like you've got nothing between the compressor and the evaporator- might as well update now. Also, get a newer style, more efficient condensor- it'll make a marked difference in cooling ability.
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If 'that which does not kill me, makes me stronger', then I should be Superman by now! |
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#8 | |
Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,939
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![]() Quote:
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__________________
1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 ![]() Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
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Tags |
a/c, factory air, serpentine belt drive |
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