how do i upgrade my heater? -
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post #1 of 5 Old 01-17-2008, 03:20 PM Thread Starter
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1982 CJ7 
Join Date: Jan 2008
Location: maine
Posts: 215
how do i upgrade my heater?

i just purchased a CJ/YJ Frankenstein. engine is a 72 304 with original tranny. frame and front clip are from an 83 CJ7. tub is from a 92 Wrangler. there is NO heater currently in the Jeep, and i want to upgrade to the Chevy heater (if i can). this is my first Jeep, and dont know too much, i also dont have access to the Jeep, as it is in storage for the winter. ive read some about upgrading the heater, but no one with the age difference of my engine and tub. any thoughts? i know i cant host a pic, but if you want to click, here she is.

NO the photo is not from the future


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post #2 of 5 Old 01-17-2008, 04:25 PM
Mike Romain
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1986 CJ7 
Join Date: Nov 2007
Location: Off the Grid in Chester Grant
Posts: 18,083
You first have to get a heater box.

The later YJ's have an upgraded heater blower so if you went YJ to match the tub you shouldn't have issues.

What dash do you have though? It might be easier to get a CJ heater box and do the blazer upgrade if the dash controls are CJ.

Here is a link on the upgrade:

86/00 CJ7 Laredo, 33x9.5 BFG AT's, 'glass nose to tail in '00, 'New' frame,wires and plumbing in '09. Carter BBD Carbed 4.0 HO in '10.
89 YJ Renegade. BBD Carbed 4.0 HO. Locked front and rear with 33x9.5 BFG AT's
Some Canadian Bush Jeep Runs and Build Photos:
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post #3 of 5 Old 01-17-2008, 05:21 PM Thread Starter
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1982 CJ7 
Join Date: Jan 2008
Location: maine
Posts: 215
the Blazer upgrade is what i want to do. i just dont know if i need to get a new heater core that matches the motor or the tub. what heater box is better? i can tell that this Jeep is going to teach me quite a bit about Jeeps.

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post #4 of 5 Old 01-17-2008, 09:43 PM
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Join Date: Nov 2005
Location: Ohio
Posts: 645
I would go with the CJ heater box, heater core and chevy blazer blower motor upgrade. It rocks. Also, it wouldn't hurt since you're draining the radiator anyway to put in a new thermostat as well.

However, it will depend like Mike said on what dash (controls) you have.

All the Jeeps I've owned
79 CJ5 258 six with a weber (current vehicle) T18/Dana20
81 CJ5 258 six (driven out of Alaska thru Canada in winter with a softtop)
75 Jeep Wagoneer 360V8
79 Jeep Cherokee 258 six
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post #5 of 5 Old 01-19-2008, 11:49 AM Thread Starter
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1982 CJ7 
Join Date: Jan 2008
Location: maine
Posts: 215
Great!!! thats the kind of input i was looking for. thank you.

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