homemade ac delete
homemade ac delete
Here is pic of ac delete I made for '84. I cut the evap case off as far from the blower motor as I could to get a flat surface to build on. I made an aluminum backing plate from .095 thick sheet and paterned it after the stock ac housing. The ductwork from the blower motor to the opening in the firewall was made from 22ga aluminum. the duct work tapers in depth from the blower motor case (about 3") to 1.25" .
The blower motor case and ductwork were attached to the heavy aluminum backing plate with rtv sealer and pop rivets. The backing plate gives it support and allows it to be fastened to the oe heater box inside.
To get rid of the industrial looking pop rivets, I applied a thin coat of dura glass. This not only improved its looks but provided a layer of protection to the thin aluminum and a little insulation from the engine and exhaust heat.
I'll have more pics next week of the finished unit and the modified interior heater box.
The blower motor case and ductwork were attached to the heavy aluminum backing plate with rtv sealer and pop rivets. The backing plate gives it support and allows it to be fastened to the oe heater box inside.
To get rid of the industrial looking pop rivets, I applied a thin coat of dura glass. This not only improved its looks but provided a layer of protection to the thin aluminum and a little insulation from the engine and exhaust heat.
I'll have more pics next week of the finished unit and the modified interior heater box.
Supreme Member
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Joined: Jun 2008
Posts: 1,468
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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: homemade ac delete
Could've boughta actual delete box but holy **** dude you got some good metalworking skills!
Supreme Member
iTrader: (7)
Joined: Jun 2008
Posts: 1,468
Likes: 0
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: homemade ac delete
Is that gonna be an all out race car? I see you got some plans on the gauge cluster, and in the 2nd pic it looks like you got a kirkey laying inthe car too. Awesome work man
Re: homemade ac delete
any way here some finished pics of the ac delete box.


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Supreme Member
iTrader: (7)
Joined: Jun 2008
Posts: 1,468
Likes: 0
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: homemade ac delete
Looks Great!! I hope your son appreciates it.
I got the ultra lite gauges too, and man you must have 400 in gauges alone lol. looks sweet
I got the ultra lite gauges too, and man you must have 400 in gauges alone lol. looks sweet
Junior Member
Joined: Jul 2009
Posts: 44
Likes: 0
From: Hardin County, Kentucky
Car: 1984 GMC. soon to be 1986 camaro
Engine: Carb'd 350
Transmission: TH 350
Axle/Gears: Stock
Re: homemade ac delete
very nice!!
that dash looks great. I wish I could make a heater box like that for my car.
that dash looks great. I wish I could make a heater box like that for my car. Junior Member
iTrader: (1)
Joined: Aug 2006
Posts: 58
Likes: 0
From: Okinawa, Japan
Car: 1989 RS
Engine: 350 TBI
Transmission: 700R4 by Monster transmition
Axle/Gears: Borg warner 3.08 posi
Member
Joined: Feb 2007
Posts: 131
Likes: 0
From: Flowery Branch,Ga
Car: 1987 Camaro
Engine: 350
Transmission: T-56
Axle/Gears: 4.56
Re: homemade ac delete
Does the blower still work in it. I was thinking of making one for my car. Also, how did you get a template off of the original box?
Re: homemade ac delete
My son decided not to keep the heater in the car, opting for the smooth firewall look, so this unit is available. Its been stored for a while. let me check it out to make sure all the blend doors still work and we'll work something out.
Re: homemade ac delete
to make the template I just took the entire evap case off the firewall and laid it flat on a piece of poster board and drew around it. Once I had the basic shape and the location of the blower inlet and the firewall heater box opening I designed the ductwork to transition from one to the other, keeping it as flat and compact as i could and still have adequate air flow.
Junior Member
iTrader: (1)
Joined: Aug 2006
Posts: 58
Likes: 0
From: Okinawa, Japan
Car: 1989 RS
Engine: 350 TBI
Transmission: 700R4 by Monster transmition
Axle/Gears: Borg warner 3.08 posi
Re: homemade ac delete
the blower and blend doors all worked off the stock heater controls. you can see the resistor block for the blower speeds mounted in the duct work just left of the blower motor. The heater controls allowed you to choose between defrost and floor vents and between fresh outside air or heat.
to make the template I just took the entire evap case off the firewall and laid it flat on a piece of poster board and drew around it. Once I had the basic shape and the location of the blower inlet and the firewall heater box opening I designed the ductwork to transition from one to the other, keeping it as flat and compact as i could and still have adequate air flow.
to make the template I just took the entire evap case off the firewall and laid it flat on a piece of poster board and drew around it. Once I had the basic shape and the location of the blower inlet and the firewall heater box opening I designed the ductwork to transition from one to the other, keeping it as flat and compact as i could and still have adequate air flow.
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Very nice. 



