air cleaner box
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New User
Joined: Apr 2009
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air cleaner box
hey guys, quick one here, hopefully somebody's looked into this a bit:
i'm wondering about the inside of the air cleaner box, that dome-shaped inner section. i assume its purpose is mainly to tone down that intake "thunking" noise, however personally extra noise is not much of an issue for me (manifold -> 2.5" collector -> 5" downward-firing stack = freakin' loud).
does anyone know if the motor will breathe any easier without that dome-shaped piece? or does it serve airflow purposes as well?
thanks,
-bryan
i'm wondering about the inside of the air cleaner box, that dome-shaped inner section. i assume its purpose is mainly to tone down that intake "thunking" noise, however personally extra noise is not much of an issue for me (manifold -> 2.5" collector -> 5" downward-firing stack = freakin' loud).
does anyone know if the motor will breathe any easier without that dome-shaped piece? or does it serve airflow purposes as well?
thanks,
-bryan
Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 15
From: Nutter Fort, WV
Some F series trucks did not have the soup bowl and most of the E series never had them.
But if the lid don't have a soup bowl, the bottom part of the air cleaner is necked down where it sits on the intake.
Creative sawing can increase that as well.
But if the lid don't have a soup bowl, the bottom part of the air cleaner is necked down where it sits on the intake.
Creative sawing can increase that as well.
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Postmaster
Joined: Apr 2008
Posts: 4,802
Likes: 1
Dave is correct on the necked lower air box piece for trucks with no soup bowl. However, no creative sawing needed for that either - just find a lower piece off a 6.9 with a soup bowl, or any 7.3, they will all have the larger opening as they rely on the soup bowl to restrict airflow. Both me and my buddy are running 7.3 lowers with bowl-less 6.9 lids, no problems with airflow or water leaks.
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Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 15
From: Nutter Fort, WV
If that is the one with just a different air cleaner, probably little if any gain.
Power Pack Plus was the different air cleaner and a turbo if I remember right, they did make a difference.
Power Pack Plus was the different air cleaner and a turbo if I remember right, they did make a difference.
Posting Guru
Joined: Apr 2008
Posts: 1,614
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the power pack was for n/a motors and i believe they really do help, there is a guy on oil burners who has a banks power pack with exaust that came with it i beilieve, and has g code injectors and the turbo pump and he put out 143.9 hp and 261.3 ftlbs, no turbo!
Postmaster
Joined: Jun 2008
Posts: 2,500
Likes: 2
From: Michigan
I thought they were rated for 185 HP and 360 ftlbs of torque stock??