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Removing A/C

Old Apr 11, 2009 | 09:36 AM
  #1  
88_TeenTrans's Avatar
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From: Canada, Ontario
Car: 1988 Fire Bird (T-Roof)
Engine: 5.0L 305 TPI
Transmission: T-5
Axle/Gears: 3.73
Removing A/C

Hi I want to remove my A/C compressor and pulley so i can run my dual 4 inch cold air intake. I was wondering can i remove the compressor and run a smaller belt and leave the tensioner pulley on? and if i remove ONLY the compressor will my heat not work? I keep hearing about the heat and an A/C Delete Box and A/C Delete Pulley.
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Old Apr 11, 2009 | 09:45 AM
  #2  
88_TeenTrans's Avatar
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From: Canada, Ontario
Car: 1988 Fire Bird (T-Roof)
Engine: 5.0L 305 TPI
Transmission: T-5
Axle/Gears: 3.73
Re: Removing A/C

I fergot to add it is a 305 TPI anbd here are a couple pics.
Attached Thumbnails Removing A/C-dsc05439.jpg   Removing A/C-dsc05440.jpg   Removing A/C-dsc05441.jpg  
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Old Apr 11, 2009 | 10:09 AM
  #3  
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From: Mooresville, NC
Car: 1983 Buick Regal
Engine: 355
Transmission: TH350
Axle/Gears: 4.11
Re: Removing A/C

Removing the AC system will not affect your heat. If you plan on just running a smaller belt, be sure to run it the same direction over your water pump pulley. You do not want to turn your water pump the opposite deirection. If you have trouble with using the tensioner, you could always put an adjustable alternator bracket on.
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Old Apr 11, 2009 | 01:42 PM
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From: Minnesota
Car: 89 IROC-Z
Engine: 370 LSX, LS3 Top End
Transmission: Built T-56
Axle/Gears: 9" Aluminum Center 3.89's
Re: Removing A/C

Im pretty sure you need the delete pulley. I removed all my a/c stuff. Pics in sig link.
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Old Apr 11, 2009 | 01:55 PM
  #5  
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From: Mandarin, Florida
Car: '87 IROC Z-28
Engine: Horse **** 305 for now
Transmission: 700-R4
Axle/Gears: 3.73 posi
Re: Removing A/C

You can remove the compressor and run a smaller belt, it won't change anything as far as the direction or routing of your belt. Do remember, however, that you will not have the defrost function anymore as it uses the a/c system to remove moisture. If you are going to remove the compressor (therefore not have a/c) you might as well go the extra mile and do the complete a/c delete (condensor, evaporator, hoses/lines, etc) and then smooth the firewall.
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Old Apr 11, 2009 | 02:07 PM
  #6  
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From: Minnesota
Car: 89 IROC-Z
Engine: 370 LSX, LS3 Top End
Transmission: Built T-56
Axle/Gears: 9" Aluminum Center 3.89's
Re: Removing A/C

Originally Posted by allboutspeed
You can remove the compressor and run a smaller belt, it won't change anything as far as the direction or routing of your belt. Do remember, however, that you will not have the defrost function anymore as it uses the a/c system to remove moisture. If you are going to remove the compressor (therefore not have a/c) you might as well go the extra mile and do the complete a/c delete (condensor, evaporator, hoses/lines, etc) and then smooth the firewall.
If you want any heat you cannot smooth the firewall. Either keep the bulky ac blower box or be like me and get a delete box.
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Old Apr 11, 2009 | 10:02 PM
  #7  
88_TeenTrans's Avatar
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From: Canada, Ontario
Car: 1988 Fire Bird (T-Roof)
Engine: 5.0L 305 TPI
Transmission: T-5
Axle/Gears: 3.73
Re: Removing A/C

HMM well I live in Canada lmao so not having the DEFROST WORK could be an issue...lol
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Old Apr 12, 2009 | 01:17 AM
  #8  
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From: Columbus, OH
Car: 1995 K2500
Engine: 5.7
Transmission: 4L80E
Axle/Gears: 4.11's
Re: Removing A/C

Defrost will still work, just not as well.
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Old Apr 12, 2009 | 01:35 AM
  #9  
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From: Flowood,MS
Car: 87 IROC Z
Engine: 5.7 L98 TPI
Transmission: 700r4,2500 stall
Axle/Gears: G80,10 bolt 3.42's
Re: Removing A/C

Do remember, however, that you will not have the defrost function anymore as it uses the a/c system to remove moisture.
I`ve heard this before but do not really understand it.I deleted the a/c and installed the delete box on my car and noticed no issues.Of coarse our winters are mild but when it rains with the windows up you still need defrost and mine works fine.Also,how do you explain the fact that quite a few cars didnt come from the factory with A/C.Did the defrost not work right in those cars?Most of the non a/c cars would have been from the northern states and Canada if I`m not mistaken.
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Old Apr 12, 2009 | 09:15 AM
  #10  
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From: Canada, Ontario
Car: 1988 Fire Bird (T-Roof)
Engine: 5.0L 305 TPI
Transmission: T-5
Axle/Gears: 3.73
Re: Removing A/C

Originally Posted by Shadygrady
I`ve heard this before but do not really understand it.I deleted the a/c and installed the delete box on my car and noticed no issues.Of coarse our winters are mild but when it rains with the windows up you still need defrost and mine works fine.Also,how do you explain the fact that quite a few cars didnt come from the factory with A/C.Did the defrost not work right in those cars?Most of the non a/c cars would have been from the northern states and Canada if I`m not mistaken.
I SO AGREE. I was sitting and thinking about all the cars that dont have A/C the only thing though I oculd come up with is maybe its not the compressor thats the issue for the defrost. Is it possible that it could be the delete box if you dont install one and keep the regualar a/c one installed.
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Old Apr 12, 2009 | 02:59 PM
  #11  
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From: Flowood,MS
Car: 87 IROC Z
Engine: 5.7 L98 TPI
Transmission: 700r4,2500 stall
Axle/Gears: G80,10 bolt 3.42's
Re: Removing A/C

Mine worked before I removed the a/c box and after I put in the a/c delete box.
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Old Apr 12, 2009 | 04:11 PM
  #12  
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From: Mandarin, Florida
Car: '87 IROC Z-28
Engine: Horse **** 305 for now
Transmission: 700-R4
Axle/Gears: 3.73 posi
Re: Removing A/C

Originally Posted by Shadygrady
I`ve heard this before but do not really understand it.I deleted the a/c and installed the delete box on my car and noticed no issues.Of coarse our winters are mild but when it rains with the windows up you still need defrost and mine works fine.Also,how do you explain the fact that quite a few cars didnt come from the factory with A/C.Did the defrost not work right in those cars?Most of the non a/c cars would have been from the northern states and Canada if I`m not mistaken.
You'll have heat to remove the ice from your window but not "defrost" to remove the fog that builds up with dew points dropping and such (might be mostly southern states I guess)
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Old Apr 12, 2009 | 04:45 PM
  #13  
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From: Muscatine IA
Car: 91 Firebird Formula
Engine: 383
Transmission: built 700r4
Axle/Gears: 4.11, 9inch
Re: Removing A/C

its air conditioning
the ac doesnt just cool it removes the moisture from the air thus helping with the fog i dont think it will make a big difference though
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Old Apr 13, 2009 | 06:38 AM
  #14  
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From: Columbus, OH
Car: 84 Z28
Engine: 305 H.O.
Re: Removing A/C

Can I ask where you got the delete box from? Mine did not have AC on the car when I purchased it, but it still has the bulky box on the firewall. I have searched and cannot seem to find a good place to purchase one. Thanks in advance.
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Old Apr 13, 2009 | 10:37 AM
  #15  
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From: Muscatine IA
Car: 91 Firebird Formula
Engine: 383
Transmission: built 700r4
Axle/Gears: 4.11, 9inch
Re: Removing A/C

i bought mine on line from a guy here

here and ebay are probably gunna be your best bet
maybe one of the sponsers tds or sumbody like that
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Old Apr 13, 2009 | 06:54 PM
  #16  
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From: Flowood,MS
Car: 87 IROC Z
Engine: 5.7 L98 TPI
Transmission: 700r4,2500 stall
Axle/Gears: G80,10 bolt 3.42's
Re: Removing A/C

^^^,What he said.Be patient and keep looking.One will turn up.I think I paid like 80 bucks for mine off of ebay.You will need a new blower motor and blower cage(fan) as well.They are different sizes than the a/c units.Got mine at advanced.Wasnt expensive.
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Old Apr 13, 2009 | 10:19 PM
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From: Minnesota
Car: 89 IROC-Z
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Transmission: Built T-56
Axle/Gears: 9" Aluminum Center 3.89's
Re: Removing A/C

Originally Posted by Shadygrady
^^^,What he said.Be patient and keep looking.One will turn up.I think I paid like 80 bucks for mine off of ebay.You will need a new blower motor and blower cage(fan) as well.They are different sizes than the a/c units.Got mine at advanced.Wasnt expensive.


Are you 100% sure you need a different motor? i know the fan is too deep for the delete box, but was thinking ill just get the right fan and keep my motor.

PS ill get a couple more delete boxes when i go to the yard.
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Old Apr 14, 2009 | 11:32 AM
  #18  
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From: Flowood,MS
Car: 87 IROC Z
Engine: 5.7 L98 TPI
Transmission: 700r4,2500 stall
Axle/Gears: G80,10 bolt 3.42's
Re: Removing A/C

I`m sure I needed one.The length of the shaft(or the mounting position) on the a/c motorput the cage into the firewall.It rubbed when the motor was turned on and made a hell of a noise.I bought the heater only motor....problem solved.
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Old Apr 14, 2009 | 12:20 PM
  #19  
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From: Cleveland, Ohio
Car: 89' IROC-Z
Engine: LO3
Transmission: 700R4
Axle/Gears: 10-Bolt/2.73
Re: Removing A/C

Brand New Fiberglass Versions.
http://www.acdelete.com/pages/82-92_F-body.htm
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Old Apr 14, 2009 | 05:22 PM
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Car: 1992 Camaro RS
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Transmission: WCT5, 7k & counting behind the 350
Axle/Gears: 4thgen disc rear w/ 3.73 Posi
Re: Removing A/C

Originally Posted by ziggy89
its air conditioning
the ac doesnt just cool it removes the moisture from the air thus helping with the fog i dont think it will make a big difference though
Yes, the A/C runs with the defroster because it removes moisture from the air. This drier air can absorb more moisture off of a surface such as your windshield so, in theory at least, it will clear the windshield off faster. Just because you delete the A/C system, that does not automatically mean you will lose your defroster function. In fact, the A/C settings will still work on the heater controls inasmuch as you will still get air from the vents. Older cars did not have the A/C tied to the defroster, and to be honest, I'm not even sure that thirdgens were set up that way.

The other reason the manufacturer's started connecting the A/C to the defroster is so that people would be sure to run the A/C in the winter to keep the seals conditioned and the system lubricated to prevent leaks and costly repairs under warranty.

As far as whether it makes a difference, I took the A/C out of my 92 when I got it(what was left of it at least) and I have not noticed any loss of functionality with the defroster. In fact, it seems to clear the windshield faster than my wife's Buick which uses the A/C with the defroster.

To the OP - I'm not sure you can get away with a shorter belt. I was able to on my 92RS with the 3.1 because my alternator is on the top left of the engine. I ran the belt around the water pump, then under around and over the power steering pump and back over top the water pump, under the tensioner to the top of my alternator. IIRC, that is where your A/C compressor is. In order for the tensioner pulley to work properly, there has to he something in that position. It's going to depend on which direction the tensioner moves to apply the tension. You can remove the rest of the A/C and leave the original blower motor housing in place. It will still work fine, but it won't look as nice as the A/C delete box would.
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Old Apr 14, 2009 | 05:55 PM
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From: Flowood,MS
Car: 87 IROC Z
Engine: 5.7 L98 TPI
Transmission: 700r4,2500 stall
Axle/Gears: G80,10 bolt 3.42's
Re: Removing A/C

In fact, the A/C settings will still work on the heater controls inasmuch as you will still get air from the vents
Thats odd,mine doesnt come out of the vents anymore when put on a/c or vent.It could be another issue but I`m happy with heat and defrost.Not sure I`d want hot air blowing in my face anytime of the year.

To the OP - I'm not sure you can get away with a shorter belt.
I`m not sure of the differances between the serp. set-ups in differant cars or trucks.My car has v-belts set-up.My 89 K1500 4x4 has a serp set-up.I was able to get a shorter belt to work when my smog pump pulley locked up and I removed it.The sticker under the hood even shows you how to run the belt without the A.I.R pump.I would imagine you could do something similar with the a/c as I doubt every serp set-up had a/c.Did GM use a delete pulley for non a/c cars or run a shorter belt?I`m not sure just wondering.
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Old Apr 14, 2009 | 06:03 PM
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Re: Removing A/C

Originally Posted by Shadygrady
Thats odd,mine doesnt come out of the vents anymore when put on a/c or vent.It could be another issue but I`m happy with heat and defrost.Not sure I`d want hot air blowing in my face anytime of the year.



I`m not sure of the differances between the serp. set-ups in differant cars or trucks.My car has v-belts set-up.My 89 K1500 4x4 has a serp set-up.I was able to get a shorter belt to work when my smog pump pulley locked up and I removed it.The sticker under the hood even shows you how to run the belt without the A.I.R pump.I would imagine you could do something similar with the a/c as I doubt every serp set-up had a/c.Did GM use a delete pulley for non a/c cars or run a shorter belt?I`m not sure just wondering.
I had no issues with mine, may be some something else with yours. As far as I know, for the V8 cars GM used a delete pulley. For the V6 cars they just used a shorter belt. I was able to get a shorter belt for my 3.1 at Autozone. My sticker under the hood also showed how to route the belt without A/C. Showed it without the A.I.R. pump as well actually.
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Old May 7, 2009 | 09:40 PM
  #23  
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Car: 87 Irocz, 95 Z28, 71 Z28 /RS
Engine: 355 Tpi, LT1, 355
Transmission: Auto, Auto, 4sp
Re: Removing A/C

I am doing the same thing but I am going the extra Mile & Got a Non AC box out of a Non AC car.

My problem now is getting the guys at the auto parts store to under stand that I need the NON AC Fan lol
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Old May 7, 2009 | 09:59 PM
  #24  
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From: Muscatine IA
Car: 91 Firebird Formula
Engine: 383
Transmission: built 700r4
Axle/Gears: 4.11, 9inch
Re: Removing A/C

head to the scrap yard and pull one out of an s-10
i had to make a new connector but cause it goes from a two wire to a single but no biggy
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Old Jun 6, 2009 | 03:17 PM
  #25  
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From: Canada, Ontario
Car: 1988 Fire Bird (T-Roof)
Engine: 5.0L 305 TPI
Transmission: T-5
Axle/Gears: 3.73
Re: Removing A/C

Haha That Old Story THE GUY AT THE PARTS STORE..... lol I dont know where or why they hire these people who dont know wtf there looking at. I have got so fed up lol I only deal with ONE GUY at ONE store now cause hes the only one who knows ANYTHING. I havev given up on all the local things like canadian tire or parts source cause well they dont know anything, So I just head over to are local speed shop. He knows me quite well now :P
p.s. The 383 Stroker with a comp cam and lifters, dart heads, springs, DEMON 750 CFM dual float carb, Holey Fuel pump, holely regulator, elderbrock performer intake manifold, Dual 4inch cold air intake, 3.7 posi rear end is almost done :P :P :P
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