AC stuff -> non-AC cab
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5th Wheeling
Joined: May 2009
Posts: 38
Likes: 14
AC stuff -> non-AC cab
I have two almost identical trucks that I am working with here. '85 F250 ex cab, long box, 4x4, 460, manual trans that is in good shape. No AC. The donor is the exact same truck, just is an '86 with working AC.
My question is - will the heater box/plenum/etc (the piece under the hood) fit my non-AC truck without modifying the firewall? IE, is it direct, bolt in replacement? I know I am dealing with changing the whole dash, wiring harness, etc. That's fine, no prob.
Just trying to get my ducks in a row before taking things apart. I tried searching around but couldn't find an answer specific to my question.
My question is - will the heater box/plenum/etc (the piece under the hood) fit my non-AC truck without modifying the firewall? IE, is it direct, bolt in replacement? I know I am dealing with changing the whole dash, wiring harness, etc. That's fine, no prob.
Just trying to get my ducks in a row before taking things apart. I tried searching around but couldn't find an answer specific to my question.
FTE Legend
Joined: Jul 2010
Posts: 32,875
Likes: 48
From: Northeast, OK
No. I read just a couple of days ago where a guy said, IIRC, that he'd done it and would never do it again. It took a lot of modification of the firewall. But, don't take my word for it. Do a search on this forum re "AC" and "firewall" and you should find someone saying he has a whole unit for sale and someone else saying it ain't easy.
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5th Wheeling
Joined: May 2009
Posts: 38
Likes: 14
Think I found the thread about it not being easy, sounds like it's just some cutting and swapping. That answers my question, cutting doesn't bother me, I did a V8 and solid axle swap in my Ranger a couple years ago. This should be a piece of cake. Thanks!
Old School Hot Rodder
Joined: Feb 2006
Posts: 6,472
Likes: 11
From: Exmore, VA
It's bound to be easier than installing AC in a non-AC 77 F-150. The AC system on those is huge. One item that may give you a real problem is the inside distribution box, I pretty sure you will end up removing the dash to change it.
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