4" exhaust on OBS??? - Ford Powerstroke Diesel Forum
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Old 07-11-2008, 06:46 AM
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Question 4" exhaust on OBS???

Is 4" an option..my buddy said he can only fit 3" on his 96 and the exhaust dealer im talking to says run 4"?!?!? will 4" fit on a 97?
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Old 07-11-2008, 06:59 AM
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yea
you can fit a 5 in. if you wanted
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Old 07-11-2008, 07:05 AM
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On those original PSD's, the down pipe was oval shaped because of the limited space between the block and the back of the engine bay. You can definately put a 4" exhaust in there but you've gotta bend some metal.
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Old 07-11-2008, 07:06 AM
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He's probably talking about the down pipe. The down pipe can start out at 3", and then it goes to 4" the rest of the way.
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Old 07-11-2008, 08:23 AM
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I know my limit is 3" on the DP but im asking about the pipe from the DP to the tip...
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Old 07-11-2008, 08:27 AM
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Yes you can fit 4" without a problem
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Old 07-11-2008, 08:28 AM
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5 in. i think is the biggest you can buy
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Old 07-11-2008, 08:33 AM
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4" is what I've got now
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Old 07-11-2008, 09:15 AM
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same here
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