1974 CJ5 Heater Box - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 11-29-2002, 02:30 PM Thread Starter
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1974 CJ5 Heater Box

This may be a dumb question, but here goes. I'm trying to improve the heater capabilities in lirpasues CJ5. I think that the heater box under the dash may have a bunch of debris in it from the PO that is impeding my airflow. How in the heck does the heater box come outta here? I can't find any bolts or screws from eith the inside of the jeep or under the hood.....what fastens it in place? BTW, I have not removed the dash and would prefer not to unless it is required.
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post #2 of (permalink) Old 11-29-2002, 04:14 PM
 
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Re: 1974 CJ5 Heater Box

I`m going to make an assumption that your `74 is the same as my `72 &`73. It`s been a while since I`ve had mine apart. The heater box has I believe 4 1/4" stud`s that come through the firewall with nut`s on the motor side. On my current `72 CJ5 I can only find 3 of them. 1 is located just under the battery tray, Another is just to the left of the bolt that hold`s the right hand support arm of the battery tray to the firewall. There`s also 1 right in the middle of the firewall directly behind the motor about a foot down from the hood. I believe the last one is to the left and up about 8 or 10" from the middle firewall one I described. I`m not positive about this one because on mine there`s only a hole in the firewall where the stud should be. Remember all the fastener`s that hold the box to the firewall are 1/4" stud`s coming through the firewall with nut`s on the motor side. I hope this help`s. Good Luck.
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post #3 of (permalink) Old 12-01-2002, 05:35 PM
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Re: 1974 CJ5 Heater Box

I have a 76 cj5 and i put in a blower motor from a 83 oldsmobile cutluss in it and it improved the heating alot. It blows harder than the stock jeep one anyday a little modification and it's in.
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post #4 of (permalink) Old 12-01-2002, 11:51 PM
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Re: 1974 CJ5 Heater Box

Hey onefast76cj5, my friend has a 77 CJ7 with the older style heater box that can not use the Blazer heater motor upgrade. Do you know if your 76 CJ5 heater box is the same as the 77 CJ7? I would like to pass the info on to him about the Cutluss blower motor. Can you give us any more info on the upgrade? I did the chevy upgrade on my 79 a couple of years ago and love it. He has always been a little green about it! [img]images/graemlins/smile.gif[/img]
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post #5 of (permalink) Old 12-04-2002, 02:56 AM
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Re: 1974 CJ5 Heater Box

I don't know if there the same jps4ever but i just trimmed until i got it in there and sealed it up with some sealer if you don't look to hard at it it looks really nice, most of the screw holes worked to. Just look at it this way, it's about the same size as a stock one just allitle different shape. make it work!!!!! oh yeh i forgot another thing. I think the blazer motor is the same as a cuttlass to, i think all chevy's use pretty much the same from 74 to 88 don't quate me on this i could be off a couple of years.
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