Is doing this a good idea?
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From: Amarillo, TX
Hook it, I'll pull it.
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From: Grand Lake, La.
That is the 6637 mod you see in lots of peoples sigs. That is a popular mod in this fourm. You can get the 6637 filter at NAPA for around 50 bucks. I didn't notice what the price they were asking on that site, but I am sure you can get the parts cheaper.
EDIT: I just looked again, they are explaining how to install the 6637. I used a 3" dwv pvc coupling instead of the exhaust pipe to install mine. That is good instructions.
EDIT: I just looked again, they are explaining how to install the 6637. I used a 3" dwv pvc coupling instead of the exhaust pipe to install mine. That is good instructions.
Last edited by miller_feed; Jan 29, 2008 at 02:29 PM.
Cargo Master
Joined: Apr 2007
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From: St. Louis, Mo.
Yes Thats the 6637 Napa filter (Kwik) filter mod. a lot of people on this site have done. There is also a filter cover for the 6637. You can get that same filter from Fleet Filter .com for about 36.00 shipped. Thats what my last one was about 6 months ago. Good Luck!!!
Last edited by guitarpicr; Jan 29, 2008 at 02:29 PM.
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From: Amarillo, TX
Originally Posted by miller_feed
EDIT: I just looked again, they are explaining how to install the 6637. I used a 3" dwv pvc coupling instead of the exhaust pipe to install mine. That is good instructions.
Hook it, I'll pull it.
Joined: May 2007
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From: Grand Lake, La.
Originally Posted by 02GrayPowerStroke
So the OD on the 3" coupler was close to the 4" size? I dont have any 4" exhaust laying around. I installed a 5" on my truck
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Locomotive breath
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From: Mid Oh. Ponderosa
Originally Posted by 02GrayPowerStroke
What does this mod give you? Is it wroth the $50 filter?
Well, not quite but like Marc says it will give better air flow. Worth every penny, compaired to other air intakes.
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From: SE Wisco
Originally Posted by strokin_it7.3
Why do they call it a "conical" style filter? It's a cylinder.
I am sure he could explain. He called his old "worthless" filter setup a conical. I see you were in on that thread too IIRC. I gave up after the second page of 12ish
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