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#1 |
blood type; Retumbo
Join Date: Jan 2004
Location: next to my reloading bench
Posts: 10,269
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non-AC heater on an AC cab
a guy I know (my old neighbor) needs heat. the evaporator box is missing. I think I have a regular heater box I can give him but I need to know if it will fit.
BTW, it is either a 69 or 70, not sure which one though. |
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#2 |
The Older Generation
![]() ![]() ![]() Join Date: Aug 2006
Location: Montezuma, Iowa
Posts: 25,505
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Re: non-AC heater on an AC cab
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I don't think so but I have never really tried it... I know the openings in the firewall are different and the heater core is inside the cab on the A/C. LockDoc
__________________
Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 - |
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#3 |
Senior Member
![]() Join Date: Aug 2004
Location: Centennial, CO
Posts: 2,951
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Re: non-AC heater on an AC cab
Yup, boxes/openings are different and the core is inside. Someone makes a bypass duct, but maybe a guy could come up with something at home in a pinch. You just need air to flow from one opening to the other on the firewall.
Here's a link: http://www.acdelete.com/pages/67-72_Truck.htm
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ClusterTruck: 68 C10 Bought in 89, wrecked in 03. Slow low $ rebuild started '17. 6.0 & TKO http://67-72chevytrucks.com/vboard/s...d.php?t=788602 93 K1500 Short Step, 350, NV4500, EBL flash ECU. Vortec heads & roller cam someday... 05 Jeep Wrangler Unlimited. 3” lift & 6-speed 02 E320 the insurance total “free car” 13 Tahoe LTZ Last edited by clay68c10; 12-19-2009 at 01:27 AM. |
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#4 | |
Registered User
Join Date: Feb 2000
Location: Center City, MN, USA
Posts: 3,254
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Re: non-AC heater on an AC cab
Quote:
I would plug the heater hose holes with a fabbed up plate. Then I would attempt to cover the part of the AC hole furthest from the tranny tunnel that isn't covered by the heater box. This piece might be the same plate to cover the AC style heater core holes. Then bolt on the non-AC heater box. You'll have limited heat flow through the firewall but limited heat is better than no heat at all. If you are doing it permant like you can use the parts you got to make sheet metal pieces you can weld in the firewall. A few years ago I went the other way making my non-AC cab work with factory AC parts. You make paper templates by rubbing a pencil on the firewall and the heater box. I marked up the famous AC vs. non-AC firewall picture to help with lining stuff up. You simply need to do the inverse of what my marked up picture states. Cut out what I welded in, and make and weld in what I cut out. Make sense? I'd try it first with a simple sheet metal plate roughly covering the AC opening.
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'70 cab, '71 chassis, 383, TH350, NP205. '71 Malibu convertible '72 Malibu hard top Center City, MN |
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