High output heater???
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Joined: Oct 2006
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From: Texas
If my info is correct- the "HIGH OUTPUT HEATER' on the late 70's model was really the standard heater up until about 76 or 77. Then they got the bright idea of putting in a smaller heater core for the " Standard" and now you know the rest of the story. Remember the TV commercial" Ford has a better idea" HaHa!!
I don't know what the chore would be to convert a standard to high output. Probably the easiest would be to take it to a shop and tell them to call you when they are done!! Good luck, Don
I don't know what the chore would be to convert a standard to high output. Probably the easiest would be to take it to a shop and tell them to call you when they are done!! Good luck, Don
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From: Louisville,Ky.
The heater core for a High output is wider than a standard one. I am pretty sure that it will fit in the standard heater box. I was going to put one in mine, but I had already bought the standard one.
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There are 2 active threads on this topic right now.
Here's one of them.
https://www.ford-trucks.com/forums/5...terchange.html
access to back pages is at the bottom of the page
The whole heater assembly has to be swapped over as the regular core assembly will not house the Larger HO heater core.
Here's one of them.
https://www.ford-trucks.com/forums/5...terchange.html
access to back pages is at the bottom of the page
The whole heater assembly has to be swapped over as the regular core assembly will not house the Larger HO heater core.
Last edited by Mil1ion; Dec 6, 2006 at 02:55 PM.
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Joined: Sep 2003
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From: lino lakes, mn
there is only one heater core for ac it is different than the non ac heater cores the high output will say high output on the heater box/plenumn a high output core will not fit in a standard heater box .
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The HO core will "fit" in the standard box, but there will have to be alot of mod. to get it to stay, and work properly. Most of the trucks that I have seen with HO heater do not have the option of cold (non-heated) air through the heater,(the heater core block off valve is not there) so the controls are even differant than standard (mostly crew cabs, built in Canada, so this may also be some of the differance). My '78 Crew Cab has the std. heater and it will cook you out with a 180 degre thermostat. I'd say there's no reason for the work of going HO (you don't live in Alaska do you) unless you happen to have all the needed pieces lying around abnd just want something to do. Happy motoring and good luck...Zeek
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