6.9 exhaust
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From: New London, Mo
6.9 exhaust
i have an 87 f250 with a 6.9 right noe it has 2 1/4 inch duals with glass packs on it i want to put bigger exhaust on it what are some good ideas i was thinkin 3" duals all the way back with no muffler
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Joined: Nov 2004
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From: Salt Lake City, Utah
I think dual 3" is too large. Go with 2 1/2 instead. If you make it too large, you won't have much power under the curve. (Ok, so its a 6.9 it always has lots of power) Also, the fuel economy may be penalized if you make it too large. (the exhaust stops scavenging efficiently at certain rpm with part throttle) But I agree, it would sound awesome. And that price is not bad. I just think that dual 2 1/2 would be a little cheaper, and would be plenty loud, and would give you good power throughout the powerband.
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From: Rio Rancho USA
Originally Posted by bigbubba87
ya i figured it would be loud is $250 to high for dual 3" all the way back?
Your engine will run great with 3" duals.
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From: New London, Mo
yes 3" dualls from the motor back installed i want it as loud as i can it would be a couple hundred more if i put mufflers on it but i dont want any it will eventually get a turbo too
Last edited by bigbubba87; Oct 23, 2007 at 07:10 PM.
