Reassembly advice
Thread Starter
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Mountain Pass
Joined: Aug 2007
Posts: 183
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From: Toledo, OH
Reassembly advice
I got a different cab and I'm starting to rebuild my '79 F-250. I have a manual, and the cab I got was from an automatic. I'm not worried about that part. What I'm wondering is the heater core. I've attached two pictures of the difference between the two. Which is the better way to go? Is there an advantage from one to the other?
Moderator & parts slinger
Joined: Feb 2007
Posts: 50,146
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From: S/W Missouri, Polk county
The cab in the 1st pic is a factory a/c cab, I think that big black box is the plenium?
Pic #2 is a NON a/c cab, do not mean to insult you, just wanted to make sure you knew that.
If you are going to go with factory a/c you will need the top pic cab or at least relocate the box, I believe.
I know a guy who removed his a/c system completely and I cut a none a/c cab patch to fill the hole, so he had the exact spot to bolt up his blower motor.
Hope this helps
Pic #2 is a NON a/c cab, do not mean to insult you, just wanted to make sure you knew that.
If you are going to go with factory a/c you will need the top pic cab or at least relocate the box, I believe.
I know a guy who removed his a/c system completely and I cut a none a/c cab patch to fill the hole, so he had the exact spot to bolt up his blower motor.
Hope this helps
Thread Starter
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Mountain Pass
Joined: Aug 2007
Posts: 183
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From: Toledo, OH
The second cab will be replacing the cab in the first pic. I forgot about a/c. That's not an insult, I really didn't give that a thought. So it's better/easier to convert an a/c cab to a non a/c, rather than vice versa, correct?
Lead Driver
Joined: Mar 2004
Posts: 8,922
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Either way it's a big deal. You would have to cut the firewall section out of the non ac cab and weld it into the cab that had ac & weld up a cupple of small holes too. I removed the ac from my cab, it was pia & now I wish I wouldn't have removed it to begin with.
Thread Starter
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Mountain Pass
Joined: Aug 2007
Posts: 183
Likes: 0
From: Toledo, OH
Since there's room, can I just hook the heater hoses up and leave the a/c cab as is, though it won't actually have a/c?
Or I guess I could trace the outline of the hole in the firewall on the a/c cab, use that as a template, and cut out that portion on the old cab without the a/c. Then just weld that piece into the firewall on the new one. I want it to look good, but it won't be anything I'm going to go around bragging about.
Or I guess I could trace the outline of the hole in the firewall on the a/c cab, use that as a template, and cut out that portion on the old cab without the a/c. Then just weld that piece into the firewall on the new one. I want it to look good, but it won't be anything I'm going to go around bragging about.
MSEE
Joined: Apr 2004
Posts: 10,386
Likes: 35
From: Austin, TX
Im a little confused - you're using the non A/C cab, correct? Are you wanting to retain AC? Non-AC trucks have the heater hose fittings coming out of the firewall, whereas AC trucks have the heater hose fittings as part of the AC box. Also, on AC trucks there is a vacuum-operated shut-off valve inline with one of the heater hoses; it's not necessary for non-AC trucks.
Thread Starter
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Mountain Pass
Joined: Aug 2007
Posts: 183
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From: Toledo, OH
No, I'm using an a/c cab. My current one does not have a/c and it is junk. I'm putting the cab with a/c on the non a/c truck.
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Lead Driver
Joined: Mar 2004
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If you don't mind that big box left in there you can just leave it but I think you would have to hook some vacuum up to run the heater controls.
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Moderator & parts slinger
Joined: Feb 2007
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From: S/W Missouri, Polk county
Keep in mind the a/c box is a space "eater" in the eng compartment, is you are not going to install a/c, I would remove the box. IMO
Cut the non a/c cab firewall area out and transfer it to the new cab. Its not that difficult, the box will make it a PITA If you are gonna run headers, changing spark plugs ect.....
Just my 75 cents
Cut the non a/c cab firewall area out and transfer it to the new cab. Its not that difficult, the box will make it a PITA If you are gonna run headers, changing spark plugs ect.....
Just my 75 cents
Elder User
Joined: Feb 2008
Posts: 999
Likes: 1
From: Davison, Mi.
I'm doing the exact same thing. You don't have to weld the non ac panel in. It can be screwed, riveted or glued on.
There are duct, wiring and block off plate changes too. Don't get rid of the donor cab until your new cab is fully functioning.
There are duct, wiring and block off plate changes too. Don't get rid of the donor cab until your new cab is fully functioning.
Moderator & parts slinger
Joined: Feb 2007
Posts: 50,146
Likes: 5,783
From: S/W Missouri, Polk county
Don't ask, I will gladly tell you.
Here is a example of a firewall patch job, with what ever was handy. Yes this is a friends truck, and yes he drove it to a FTE G2G like this and yes we picked on him ALOT.
He had to drive it there with no blower or heater core, just to get the correct patch panel I cut out for him out of another truck.
He had to drive it there with no blower or heater core, just to get the correct patch panel I cut out for him out of another truck.
Post Fiend
Joined: Dec 2006
Posts: 9,111
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From: Lexington Mo
Good point, sure hope you're right........... Need to get working on that, still haven't put my floor pan in I bought late last summer. Debating on sticking with the bench, or going to buckets, Usually it's just me and Tim in there...