Getting the AC going on ls swap - The 1947 - Present Chevrolet & GMC Truck Message Board Network

chevyman70 · 09-10-2012, 08:12 PM

With this hot weather, I want to get the AC functioning on my 70. I have the compressor that came with 5.3l. I would like to retain the stock functionality. I have the Evaporator core the came with the truck. So my question is what stock components can I use? If any one has pictures of what they did to get their AC working, I would love to see them so I can get ideas.
Posted via Mobile Device

clinebarger · 09-10-2012, 08:23 PM

Quote:

Originally Posted by chevyman70

With this hot weather, I want to get the AC functioning on my 70. I have the compressor that came with 5.3l. I would like to retain the stock functionality. I have the Evaporator core the came with the truck. So my question is what stock components can I use? If any one has pictures of what they did to get their AC working, I would love to see them so I can get ideas.
Posted via Mobile Device

The Denso or Delco compressors that come on 5.3L's Do Not work well with Expansion Valves or POA valves. Your truck has both. The good news is you can convert to a Fixed Orifice system fairly easy....Let me find the thread.

http://67-72chevytrucks.com/vboard/s...d.php?t=473921
http://67-72chevytrucks.com/vboard/s...d.php?t=473710

chevyman70 · 09-10-2012, 11:03 PM

Awesome! I would really appreciate it.

chevyman70 · 09-10-2012, 11:16 PM

This is what I have. I still have the drier somewhere.

mccurrkm · 09-12-2012, 09:36 AM

I went with the aftermarket Sanden compressor and top mount brackets because I also heard that the stock ls compressors don't work well with the older systems. If the route Cline is talking about is cheaper, by all means try that but if not, I did find the top mount brackets with tensioner and belt for 250 here...

http://www.alangrovecomponents.com/LS.htm

I think I paid 180 for my compressor and it is chrome. Just another option for you.

Custom 68 · 09-12-2012, 10:14 AM

maybe it is not supposed to work but I am using the factory compressor with my factory stuff (new POA valve) I also upgraded my condensor and a new dryer It seems to work good. I would be curious on why they dont work good. It has been going for 6 years. Now maybe it could be better? Temp readings out of my vents while going down the highway is about 45 degrees maybe a little better.

mccurrkm · 09-12-2012, 12:07 PM

Yea it didn't make any sense to me either why it wouldn't work. I had several people tell me it wouldn't work well and they all had different reasons. I do remember one saying it was due to the climate control in the original vehicle. I figure in a single cab truck, it doesn't take much to cool it. The reason I didn't want to use the original was mainly because I didn't want to cut my frame to fit it.

chevyman70 · 09-12-2012, 09:00 PM

Custom68
do you have pictures of your ac system? I would greatly appreciate it.

Custom 68 · 09-14-2012, 11:10 AM

I will try to snap a few photos this weekend.
Dave

09-10-2012, 08:12 PM	#1
chevyman70 Registered User Join Date: May 2002 Location: Lakewood, CA Posts: 194	Getting the AC going on ls swap With this hot weather, I want to get the AC functioning on my 70. I have the compressor that came with 5.3l. I would like to retain the stock functionality. I have the Evaporator core the came with the truck. So my question is what stock components can I use? If any one has pictures of what they did to get their AC working, I would love to see them so I can get ideas. Posted via Mobile Device

09-10-2012, 11:03 PM	#3
chevyman70 Registered User Join Date: May 2002 Location: Lakewood, CA Posts: 194	Re: Getting the AC going on ls swap Awesome! I would really appreciate it.

09-10-2012, 11:16 PM	#4
chevyman70 Registered User Join Date: May 2002 Location: Lakewood, CA Posts: 194	Re: Getting the AC going on ls swap This is what I have. I still have the drier somewhere. Attached Images

09-12-2012, 09:36 AM	#5
mccurrkm Registered User Join Date: Feb 2012 Location: Anderson, SC Posts: 164	Re: Getting the AC going on ls swap I went with the aftermarket Sanden compressor and top mount brackets because I also heard that the stock ls compressors don't work well with the older systems. If the route Cline is talking about is cheaper, by all means try that but if not, I did find the top mount brackets with tensioner and belt for 250 here... http://www.alangrovecomponents.com/LS.htm I think I paid 180 for my compressor and it is chrome. Just another option for you. __________________ My 85 LQ4 Build

09-12-2012, 10:14 AM	#6
Custom 68 Registered User Join Date: Nov 2001 Location: Springfield, MO Posts: 2,939	Re: Getting the AC going on ls swap maybe it is not supposed to work but I am using the factory compressor with my factory stuff (new POA valve) I also upgraded my condensor and a new dryer It seems to work good. I would be curious on why they dont work good. It has been going for 6 years. Now maybe it could be better? Temp readings out of my vents while going down the highway is about 45 degrees maybe a little better. __________________ Dave 1968 Custom Chevy with turbo charged 5.3 gen III 4l80e swap 1967-71 GMC 3/4 ton long step 4x4 (not sure what year exactly?) "A good friend will bail you out of jail...but a true friend will be sitting next to you saying "that was frekin awesome". "If it doesn't fit force it...If it breaks then it needed to be replaced anyway!"

09-12-2012, 12:07 PM	#7
mccurrkm Registered User Join Date: Feb 2012 Location: Anderson, SC Posts: 164	Re: Getting the AC going on ls swap Yea it didn't make any sense to me either why it wouldn't work. I had several people tell me it wouldn't work well and they all had different reasons. I do remember one saying it was due to the climate control in the original vehicle. I figure in a single cab truck, it doesn't take much to cool it. The reason I didn't want to use the original was mainly because I didn't want to cut my frame to fit it. __________________ My 85 LQ4 Build

09-12-2012, 09:00 PM	#8
chevyman70 Registered User Join Date: May 2002 Location: Lakewood, CA Posts: 194	Re: Getting the AC going on ls swap Custom68 do you have pictures of your ac system? I would greatly appreciate it.

09-14-2012, 11:10 AM	#9
Custom 68 Registered User Join Date: Nov 2001 Location: Springfield, MO Posts: 2,939	Re: Getting the AC going on ls swap I will try to snap a few photos this weekend. Dave __________________ Dave 1968 Custom Chevy with turbo charged 5.3 gen III 4l80e swap 1967-71 GMC 3/4 ton long step 4x4 (not sure what year exactly?) "A good friend will bail you out of jail...but a true friend will be sitting next to you saying "that was frekin awesome". "If it doesn't fit force it...If it breaks then it needed to be replaced anyway!"



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.