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

Cat Converter question

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Old Mar 21, 2009 | 08:28 PM
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From: Diboll, Tx.
Cat Converter question

On my '84 model F150, 300 6 truck, I have what looks like two converters. I know some of the 4 and 6 cyl. passenger cars had a hollow shell, resonator near the head pipe. Is this so on the trucks too? Also what size pipe is used on the 6 cyl trucks? I would like to buy my pipe and rent the cutter at the same time, so i dont have to make trips back to the parts store.
 
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Old Mar 21, 2009 | 09:09 PM
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both are converters, my trucks all have 2 1/4" pipe
 
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Old Mar 21, 2009 | 10:57 PM
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Thanks for the info!
 
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Old Mar 22, 2009 | 03:38 PM
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For Your information, The single aftermarket replacement converter that they sell nowdays, replaces both of the factory ones.
 
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Old Mar 23, 2009 | 07:09 PM
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Yeah i have ditched the dual cats for a high flow Flowaster cat on my 95. On as old as my project truck, they arent required. Someone had already beat me to the punch though and gutted the cats. I had parts of the factory pipe that were starting to rot, so i replaced it from the head pipe to the glasspack, and put a turn down in front of the axle. Sounds a LOT better than it did. Thanks guys for all your input.
 
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Old Mar 23, 2009 | 07:19 PM
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I wish it was that way in California.
 
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Old Mar 23, 2009 | 07:54 PM
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From: Diboll, Tx.
Defect to Texas. We'd be glad to have ya!
 
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Old Mar 23, 2009 | 11:18 PM
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Amen to the Texas idea.

My 80 didn't have a converter in it all, and I had the hardest time trying to get an inspection, but somewhere in little bitty letters it states that "All vehicles after 1969 must have a CC" but in teenny teeny letters behind that the law reads "Vehicles before 198? (I wanna say 83) may have the CC removed it is leaking, clogged, or defective".
 
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Old Mar 24, 2009 | 03:06 AM
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That's strange cause CCs weren't introduced until 75.
 
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Old Mar 24, 2009 | 04:42 AM
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some of the trucks had a "catalitic convertet exhemt" rateing. I think until 83, I think they were 351w 's, and 460's. there were 2 smog pumps on them, and a whole bunch more hoses and crap under the hood. you could'nt just clasify it that way, there was a sticker under the hood that specified cc exhempt. my buddy has an 83 f-350 with a 351 w 2bbl dump truck like that. this is maryland, I don't know about other states, but can't imagine ford only makeing them like that for only 1 state. I know cheverolet did it too, they called thiers "big 10" don't tell any one, but I owned one of them.
 
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Old Mar 24, 2009 | 03:33 PM
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"but can't imagine ford only makeing them like that for only 1 state"

Oh Yes. California is one such state. Infact I think it's the only state that requires it's own strict smog systems.

Every other state is Federal Emissions.
 
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Old Mar 24, 2009 | 05:08 PM
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It would be easy enough to swap out the radiator support to get one of those "exempt" stickers no?
 
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Old Mar 24, 2009 | 06:05 PM
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The top section where the emission sticker is, easily removable without much effort. It's attached to the support, it's not a part of it.

In california it goes by vin number, as well as that emission sticker however.

And the smog technician is highly trained to look for that type of thing, as well as their computer basicly fills in all the blanks.

You can check the california BAR website for more information. The book "War and Peace" is light reading by comparison.
 
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Old Mar 25, 2009 | 09:32 AM
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From: Blue Eye, mo. hwy 86 & JJ
Originally Posted by uncle.stosh
It would be easy enough to swap out the radiator support to get one of those "exempt" stickers no?
ha ha ha! did that exactly when i wrecked the truck but then a buddy took the sticker off....
i need some new friends
 
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Old Mar 25, 2009 | 10:14 AM
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When I was stationed at Ft Carson my truck had to pass inspection and there was no way to do that without several thousand dollars worth of work heck I didn't even have a cataletic convertor at all or anything else for that matter. So I just found a little shop out in the country paid them a little extra "magically" it passed with flying colors. I'm sure this is legal...LMAO
 
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