K&N air filter for 300 6 cyl?? - Ford Truck Enthusiasts Forums



K&N air filter for 300 6 cyl??

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Old 07-10-2008, 01:37 PM
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Truxx1956 Truxx1956 is offline
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Question K&N air filter for 300 6 cyl??

Hey has anyone used a K&N air filter assembly for the 300 6 cyl? Or do they even make one? Did it help the power any?

Thanks
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Old 07-10-2008, 02:41 PM
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what year??
the circle ones are kinda universal, but make sure you get the right height. I havn't ever used one. Kinda pricey for me.
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Old 07-10-2008, 03:40 PM
Motorhead351 Motorhead351 is offline
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If your talking about an efi 4.9/300

K&N does make a replacement filter, same dimensions as stock, fits right in the air box.
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Old 07-10-2008, 05:08 PM
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Quote:
Originally Posted by Motorhead351 View Post
If your talking about an efi 4.9/300

K&N does make a replacement filter, same dimensions as stock, fits right in the air box.

Yes I'm talkin about an EFI 300, BUT I dont want one to fit in the box, I'd like to replace the UGLY box and make it look better and run better. I also wondered if I could change the throttle body from a V8 truck to the 6? They look the same, I'm not sure if it would bolt up or not? Has anyone done this?


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Old 07-11-2008, 01:13 AM
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If you are talking about a complete cold air intake from K&N, I do believe that they make one, its about 200 bucks or so. Go here Performance Parts Online for Cars and Trucks - Performance Center, I think thats the website I saw them on. As far as the throttle body, the one from the 302 will be your best bet as far as fitting will be a little larger, but i don't think it will make much of a difference.
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Old 07-11-2008, 06:15 AM
Motorhead351 Motorhead351 is offline
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Well, an interesting note.

SS in a past post, mentioned he removed the air tubes completely from the throttle body, dynoed it, then compared that against a run with the tubes in tact. Made no difference.

There are universal K&N or other brand airfilters, and there is universal aluminum tubes, would imagine you could make something easy enough but how effective would it be, who knows.

All v8 throttle bodies have the same bore size, the 302/351 are identical, the 460 has extra issues that need to be addressed to fit, so go with the SBF TB. It will bolt right up with minor linkage issues to be addressed. You also have to port match your intake, more involved.

Im not sure Id tackle it for performance, as there have been guys modify carbd engines using a one barrell carb and theyd flat haul ***...so the stock TB which i believe flows 400 or so cfm, should be plenty for a hot street engine.

If you believe SS dyno experimentation, he suggested there was no vacuum at WOT on his engine, which is an old trick carbd folks used to see if they needed more carb, if vacuum is present then you need an opening that will flow more cfm, his did not.

You could read the thread right around this one titled "optis attempt at a larger throttle body".
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Old 07-11-2008, 09:50 AM
SR_Crewchief SR_Crewchief is offline
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Quote:
Originally Posted by Truxx1956 View Post
Yes I'm talkin about an EFI 300, BUT I dont want one to fit in the box, I'd like to replace the UGLY box and make it look better and run better. I also wondered if I could change the throttle body from a V8 truck to the 6? They look the same, I'm not sure if it would bolt up or not? Has anyone done this?
That airbox may be ugly, but it is actually better that the K&N FIPK, provided that duct from the radiator mount to the box is intact. It is a cold air system vs the FIPK pulling in hot underhood air. If you thoughly clean the box and ducting and use good quality filters your good to go.

Don't worry about larger TB's if you haven't done any work on the head to improve air flow. The stock TB flows better than the stock unmodified head does.
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Old 07-11-2008, 10:09 AM
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A stock Motorcraft filter will be nearly as good as the K&N and cost considerably less. For the difference in the cost I don't think there would be enough difference to make a difference in the performance.
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Old 07-11-2008, 02:12 PM
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Not worth the cost as there is No noticeble improvement.
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Old 07-11-2008, 03:54 PM
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Thanks guys!!
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Old 07-11-2008, 04:19 PM
Motorhead351 Motorhead351 is offline
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There is some debate as to how well the filter, filters...

with that said, I paid a whopping $20 for my K&N replacement filter, far as Im concerned it paid for itself vs cleaning it/oiling vs paper filter scheduled replacement but now I think they are $30, so who knows...
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Old 07-11-2008, 09:04 PM
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Quote:
Originally Posted by Motorhead351 View Post
There is some debate as to how well the filter, filters...

with that said, I paid a whopping $20 for my K&N replacement filter, far as Im concerned it paid for itself vs cleaning it/oiling vs paper filter scheduled replacement but now I think they are $30, so who knows...

Paid $50 for mine.. and I have to oil it. When it's time to oil it, I'm just going to replace it with a paper one. I honestly don't think it does any better than a cheapy one.
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Old 07-12-2008, 06:20 AM
Motorhead351 Motorhead351 is offline
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I didnt expect a performance increase. When I purchased mine I paid $23.


Wow...they now list for $43 local...inflation sucks hugh?
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Old 07-12-2008, 07:21 PM
Silver Streak Silver Streak is offline
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I considered one several years ago and they were around $50 then, I think you just got a deal.

K&N=Krappy&Nasty
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Old 07-13-2008, 07:04 AM
Motorhead351 Motorhead351 is offline
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It was around a decade ago, I was standing in the parts line, asked for a replacement paper filter, saw K&N pop up on the screen, jokingly asked, how much do they run? Dude said $23. Maybe it was luck.
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