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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

Replacement Catalytic Converter

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Old Dec 17, 2016 | 01:30 PM
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Replacement Catalytic Converter

'84 F250 with the 351W...I knew it needed exhaust work when I bought it but what I missed was that it had no cat. After some googling, there seem to be several generic options available. What makes/models should I look for in a quality replacement? thanks
 
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Old Dec 17, 2016 | 06:36 PM
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Any of the ones in the parts stores will work ok. Some of the setups were a little weird and are hard to duplicate if you have to. Usually you don't have to, as long as it has a cat somewhere in the system they usually will pass it.
 
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Old Dec 18, 2016 | 10:32 AM
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Originally Posted by Franklin2
Any of the ones in the parts stores will work ok. Some of the setups were a little weird and are hard to duplicate if you have to. Usually you don't have to, as long as it has a cat somewhere in the system they usually will pass it.
OK, I was thinking of getting one of those cat-back exhaust kits for my year/model/engine so I was curious if I had to make sure to get a certain cat (or style/size of cat) to fit properly or is there enough flexibility built in to accommodate it?
 
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Old Dec 18, 2016 | 01:04 PM
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Originally Posted by shnoop
OK, I was thinking of getting one of those cat-back exhaust kits for my year/model/engine so I was curious if I had to make sure to get a certain cat (or style/size of cat) to fit properly or is there enough flexibility built in to accommodate it?
I am not sure I am following your question? If you have the stock system, the cat-back system should fit up.

If you have a exhaust with a non-stock cat in it, then you might need to do a little welding or retro-fitting.

If you have a exhaust with no cat in it at all, and want to put a cat-back system on it, then you will have to install the cat-back and then stare at it to see what you will need to hook it up. Probably not much, maybe a short piece of pipe and some clamps.
 
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Old Dec 18, 2016 | 01:20 PM
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Originally Posted by Franklin2
I am not sure I am following your question? If you have the stock system, the cat-back system should fit up.

If you have a exhaust with a non-stock cat in it, then you might need to do a little welding or retro-fitting.

If you have a exhaust with no cat in it at all, and want to put a cat-back system on it, then you will have to install the cat-back and then stare at it to see what you will need to hook it up. Probably not much, maybe a short piece of pipe and some clamps.
The current exhaust system is rusted out and needs to be replaced. It has NO cat at all to speak of at the moment. So I just want to make sure I'm not buying anything that won't be compatible and require extra work to hook up, that's all.
 
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Old Dec 18, 2016 | 01:23 PM
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If you do not replace the part up front with stock stuff, then you will most likely need to do a little work to get it to hook up. If you can afford it, getting a exhaust shop to do the work can save a lot of grief. Exhaust work is not fun.
 
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Old Dec 18, 2016 | 01:56 PM
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Originally Posted by Franklin2
If you do not replace the part up front with stock stuff, then you will most likely need to do a little work to get it to hook up. If you can afford it, getting a exhaust shop to do the work can save a lot of grief. Exhaust work is not fun.
Yeah that was my plan as well, I did it once years ago on an old jeep and I almost shot myself

I was hoping to save some money by buying the parts myself upfront, hence the need to get them exactly what they'll need.
 
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Old Dec 18, 2016 | 07:14 PM
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They can make anything you give them work if they are a good shop.

I would talk to them first though. We had a good shop where I used to live and once you added up all the Walker stuff to replace the exhaust yourself from the store, it was the same price just to take it to the exhaust shop and let them do the whole thing, including paying them for the pipe and the muffler(s).

I then moved and the shop down there charged way too much, you could always save money by doing it yourself with the stock Walker stuff. It pays to shop around and find a good shop, usually one out in the boonies by itself.
 
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