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stock exhaust diameter?

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Old Feb 2, 2009 | 01:19 PM
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84 f250 6.9's Avatar
84 f250 6.9
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stock exhaust diameter?
can anyone tell me what the exhaust size is on my 84 6.9 me an a buddy are gonna try an finally fit my stack an i need to know which size elbows to get
 
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Old Feb 2, 2009 | 03:07 PM
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2.25, if it was me i would make it bigger from close to the manifols then run it into the stack, but i guess i like tryin to squeeze horse power out of every thing lol
 
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Old Feb 2, 2009 | 03:38 PM
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Yep I have to agree 2 1/4 stock I would get it as large as possoble as soon as possible that will help you out a lot to get rid of the back pressure
 
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Old Feb 2, 2009 | 06:01 PM
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alright i heard from someone it could be 2.5 stock this is wrong?
 
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Old Feb 2, 2009 | 06:11 PM
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It should be 2.25 at the manifold and y-pipe. But may have been enlarged from there back. On mine the PO jumpedit up to 2.5 (real crappy weld job) from the y-pipe back. If I can find a place that sells the DIY pipe pieces I want to go all 3 inch right after the manifolds. Mabye even duals.
 
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Old Feb 2, 2009 | 06:13 PM
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i want to run stack when i get the cash
 
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Old Feb 2, 2009 | 06:34 PM
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dont we all want to run stacks? lol my truck came with it but the stupid owner had it takin off now i gotta go through the trouble to put it back on
 
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Old Feb 2, 2009 | 06:38 PM
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ya but i live in cali they probley try to take it way if i did that
 
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Old Feb 2, 2009 | 06:54 PM
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As my sig says I put a 6.9 in my Bronco. I would love to run stacks but I haven't figured out to do it with out looking like I just drove off the set of deliverance.
 
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Old Feb 2, 2009 | 07:04 PM
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u say that like a bad thing have u though about seting it up like the old shelby corbas
 
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Old Feb 2, 2009 | 07:52 PM
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Yea, but that would be alot of work down the drain when I turbo it. I will probably just build a y-pipe and single exhaust. Local muffler shop want $750 to make a y-pipe, are they nuts?
 
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Old Feb 2, 2009 | 10:57 PM
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Man if you want stacks, running them on a Bronco should not slow you down.



 
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Old Feb 2, 2009 | 11:01 PM
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dave is that ur wifes car
 
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Old Feb 3, 2009 | 02:10 AM
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Originally Posted by 84 f250 6.9
dont we all want to run stacks?
Not me. I'll stick to rolling smoke on the hybrids and import "tuners". I think they look silly on a standard fleetside pickup. Looks as out of place as the Subaru does with them. Even worse if it is a single, large diameter pipe directly in the center of the bed. Like some sort of WT unicorn. What is the point of taking away some of the functionality of your truck, just for looks?

The only trucks that can pull off the look are flatbeds or a step side (outside the bed, behind the cab).

Jason
 
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Old Feb 3, 2009 | 02:14 AM
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i want a flat bed so bad
 
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