5.8 351w air intake. - Ford Truck Enthusiasts Forums



5.8 351w air intake.

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  #1  
Old 03-02-2010, 10:01 PM
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fordx316 fordx316 is offline
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5.8 351w air intake.

Why does the 5.8 351 v8 have two tubes coming from the engine to air box? Can i conjoin them into one tube with one cone filter, or should i just add two air filters to each tube?
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Old 03-03-2010, 01:24 PM
Beechkid Beechkid is offline
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You can certainly combine them into one tube. However, the oem system is acutally very efficient & capable of support well over 460 cid up to 400 hp- especially with a filter change.
If you do an online search for “air filter test” there is a lot of very good information. IMHO, the CAI units are NOT WORTH THE $$! Unless you are talking about a system that was specifically designed for a specific application there are very little hp/tq gains actually achieved in a street use vehicle and there are very few docs that these mfg’s can produce that actually show an increase in hp/tq in the power-band range of a relatively stock street vehicle.

I would avoid oil impregnated filters. While they have their purpose in off-road applications, Ford/GM/Dodge all have “watch-out” bulletins where the oil has contaminated intake sensors. - they even have a training video for the tech's on this (flatratetech.com) .

If you look at the flow data, WIX HP filters flow 98+% of K&N and have a much smoother flow post filter plus excellent filtering, for a fraction of the price!

You can use a WIX OEM HP replacement filter in the OEM plastic manifold box or build an true air ram type intake into intake.
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Old 03-03-2010, 08:42 PM
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fordx316 fordx316 is offline
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ooo. lots of help, thanks. idk what ill end up doing yet.
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Old 05-11-2010, 06:50 PM
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i like the air horns(:
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Old 05-11-2010, 10:21 PM
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fordx316 fordx316 is offline
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lol thanks, theyre loud and cool. a must have in ford trucks IMO
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Old 05-12-2010, 04:23 AM
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were did you put the air compressor?
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Old 05-12-2010, 09:28 PM
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compressor is under the windsheild washer fluid, theres a hole down there a good size to mount stuff, and the tank is mounted underneath next to the frame rail right around the transfer case. It makes it easy to tap into the air tank so i can fill up my tires and stuff with the air.
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Old 05-12-2010, 10:36 PM
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that would be good for air up tires after im done driving in the dunes. what kit did you use and were did you get it?
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Old 02-09-2011, 11:27 PM
92freebee 92freebee is offline
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Beechkid, are the WIX HP filters you speak of a product like the fram airhog or just the standard WIX paper filter?
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Old 02-10-2011, 01:44 PM
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Quote:
Originally Posted by 92freebee View Post
Beechkid, are the WIX HP filters you speak of a product like the fram airhog or just the standard WIX paper filter?
Wix use to make an "HP" version of the filters (used in NASCAR, etc) but I have not seen those specific listings for a while and over the past few years, the "standard" paper elements I use in my vehicles have literally the same design similarities as the HP series, bu the flow test were done on the standard filters and HP versions.
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Old 02-10-2011, 01:54 PM
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I may have to order up a standard wix filter and compare it to the Auto-Extra filter I'm using now.
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1988, 351w, 4x4, 58, 98, air, dose, f250, filter, flow, ford, intake, oil, system, truck

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