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Aftermarket Firewall Heater/AC Box???

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Old Feb 28, 2022 | 12:02 AM
  #1  
AlpineWhiteIroc's Avatar
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From: Tacoma, WA
Car: 1986 Iroc-z
Engine: 10:7:1 Iron LS1
Transmission: T56
Axle/Gears: 4.10 Eaton True Trac
Aftermarket Firewall Heater/AC Box???

Anyone know where I can possibly find a new Heater Box / AC... Keeping AC, all I can seem to find are heater box with AC deleted....mine crumpled into a few pieces in spots removing it to paint bay.

I'm talking about the plastic box cover on passenger firewall that blower motor is connected to. I salvaged the top AC piece but the entire lower plastic I need to replace.

Any ideas guys? I looked everywhere, hopefully it's just my searching skills...hehe

Thanks!
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Old Mar 4, 2022 | 06:55 PM
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1989karr's Avatar
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From: Hawaii
Car: 89' Firebird / 87' Formula
Engine: 3.4 / 5.0
Transmission: 700-R4
Axle/Gears: 3.42 / 3.42
Re: Aftermarket Firewall Heater/AC Box???

I don;t think anyone makes it.


Have you tried asking hawks? I think tis the same 82 - 92
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Old Mar 5, 2022 | 02:12 PM
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3.1EyeCandy's Avatar
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From: Conroe, TX
Car: 1987 GTA
Engine: LS1
Transmission: 4L60e
Re: Aftermarket Firewall Heater/AC Box???

I put a hole in the bottom piece of mine when pulling an engine out. My solution was to use fiberglass to rebuild and strengthen it, then some light body filler to smooth it out, then SEM black paint. It looks brand new and should last another 20 years.

Beyond that, I saw a few on ebay for way too much. They also seemed like they'd probably need some repair work.
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Old Mar 5, 2022 | 03:16 PM
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Car: '89 Firebird
Engine: 7.0L
Transmission: T56
Re: Aftermarket Firewall Heater/AC Box???

I've never seen new reproductions. The original is a type of fiberglass I think. Call a marina or boat builder and try to find somebody in your local area that does fiberglass repair. And be sure to tell them it is close to exhaust pipe and gets hot.
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