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Old 09-02-2019, 08:45 AM
VicSierra VicSierra is offline
230 Tornado
Join Date: Dec 08, 2015
Location: Texas
Posts: 19
factory AC fitment for early J trucks

Hello everyone, have a quick question, I have been searching the forum but can't find the answer for sure. But how interchangeable are the AC boxes for J trucks? I have a handle on a 1973 J2000 w/360 with factory underdash AC and I have a 1969 J2000 w/B350 without AC. I already know that I will need to relocate the battery I have the senden mounts already for the buick, and I will a guy who makes custom A/c hoses , electrical connections will need to be made etc, etc. but I just wanted to be sure if the vents/box will physically fit without much hassle? Thanks forum!
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Old 09-02-2019, 11:34 AM
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Mikel Mikel is offline
Join Date: Aug 09, 2000
Location: New Haven, CT
Posts: 6,308
I have a '63 J300 with the earlier "glove compartment" Super Wagoneer A/C, but I suspect you don't have much to worry about.
1969 M715 6x6
1963 J300 Swivel frame
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Old 09-02-2019, 11:59 PM
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FSJunkie FSJunkie is offline
The Nigel Tufnel of the FSJ world.
Join Date: Jan 09, 2011
Location: Not The Hot Part, Arizona
Posts: 4,018
It's pretty simple. The under dash unit is held in place by a flange along the front that screws to the underside of the front edge of the dash. There is a support strap on the back side that helps support it from the firewall.

The two hoses and clutch wire go through a hole in the firewall shared with the speedometer cable.

Power from the accessory or run side (doesn't much matter) of the ignition switch through an inline fuse to the A/C control switches.

Condensate drain hose goes down through the transmission tunnel.

Buicks normally mounted the A/C compressor way over beside the alternator and slightly down. That may create problems with your battery but obviously some Jeeps came with factory air conditioned 350's somehow without relocating the battery.
'72 Jeep Wagoneer Custom, 360 V8

I love how arguements end as soon as Ristow comments. Ristow is right...again.
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Old 09-03-2019, 12:28 PM
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tgreese tgreese is offline
Join Date: May 29, 2003
Location: Medford MA USA
Posts: 11,289
You realize that universal under dash units are not wildly expensive. Not a lot of volume to cool in a J-truck cab. You are already getting the hoses made, and adapting a new compressor.
Tim Reese
Maine beekeeper's truck: '77 J10 LWB, 258/T15/D20/3.54 bone stock, low options (delete radio), PS, hubcaps.
Browless and proud: '82 J20 360/T18/NP208/3.73, Destination ATs, 7600 GVWR
Copper Polly: '75 CJ-6, 304/T15, PS, BFG KM2s, soft top
GTI without the badges: '95 VW Golf Sport 2000cc 2D
ECO Green: '15 FCA Jeep Cherokee KL Trailhawk
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Old 09-07-2019, 08:44 PM
red mistress's Avatar
red mistress red mistress is offline
304 AMC
Join Date: Sep 13, 2007
Location: TX
Posts: 2,291
62-72 Clardy & American Air drivers side air duct for fitting early steering column.
67 Gladiator 15K J3000 AMC 327, PTO, 35" BFG's
69 Jeepster 8701 convertible
80 Honcho Sportside
82 CJ-8 75K org SR decals
82 Cheroeke Laredo 24K
83 CJ-8 50K 401, ARB60's, F&R Winch, 38"
84 CJ-7 38K Garnet Int., Jeep 8274 winch
84 CJ-8 mud Scrambler
87 J 20 36K smooth alum camper & boat rack.
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