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

Exhaust help

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Old Mar 17, 2007 | 12:11 PM
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Exhaust help

How many catalytic converters are on an 86 F-150 300-6 4spd 4x2? Its carb not efi if that helps...and also if i were to just exit the exhaust before the rear wheel pointing outside of the truck would that make it a bit quieter than just exiting under the bed?
 
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Old Mar 17, 2007 | 02:32 PM
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Anybody At All?
 
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Old Mar 17, 2007 | 03:31 PM
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Come On People this is a very important thing.
 
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Old Mar 17, 2007 | 04:45 PM
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My 86 stepside 300/6 has 1 cat on it. I don't know if there is any advantage with exiting the pipe before the rear tire. I have a muffler on mine, and that makes it real quiet.
 
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Old Mar 17, 2007 | 04:50 PM
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well the guy my dad bought the truck from yesterday said the muffler fell off but when we look under it...it seems there is one on there...like a cat and a muffler or maybe 2 cats...i dont know heres a link to its cardomain page i just made today http://www.cardomain.com/ride/2596751
 
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Old Mar 17, 2007 | 04:57 PM
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The cat is the one closest to the engine. Looks like a nice truck for 500 bucks!
 
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Old Mar 17, 2007 | 05:41 PM
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would the muffler be like 1.5'-2' behind the cat?
 
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Old Mar 17, 2007 | 06:27 PM
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Is it your intention to have the quietest exhaust system possible? Because, if it is, then having a muffler plus a catalytic converter with the exhaust exiting out the rear is the best setup. Omitting either the cat or the muffler (or both) and having the exhaust exit before the rear wheel on the drivers side is the loudest possible setup. I have this on one of my cars and I like it but it might drive me nuts on a long drive.
 
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Old Mar 17, 2007 | 07:33 PM
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Exiting under the bed is very loud inside the cab. No matter if I exit out the side or the rear, I always exit beyond the body, not under it.
 
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Old Mar 17, 2007 | 10:29 PM
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Like Dave said, when it exits under the truck it kind of echoes/reverberates making it louder. Simply running a pipe out from under the truck will help a lot.
 
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Old Mar 18, 2007 | 07:47 AM
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yeah i was gonna send it from under the truck to the outside just to get it a bit quieter...not seeking the quietest exhaust, just one a lil quieter than it is
 
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Old Mar 18, 2007 | 08:10 PM
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Well yeah not bad for 500 at all what a steal congrats!
 
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Old Mar 19, 2007 | 09:04 PM
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My rig had two original then the first one clogged up and the truck woudln't run properly so My mechanic at the time just removed it put piece of pipe in place. Strange though my emissions test actually pass better now than before.
 
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Old Mar 20, 2007 | 03:13 PM
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interesting
 
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Old Mar 20, 2007 | 06:27 PM
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sweet ride especially for 500 bucks
 
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