Intake ?
Thread Starter
|
Junior User
Joined: Dec 2015
Posts: 91
Likes: 0
From: Southern Ca high Desert
Intake ?
Ok.. Ready to buy the air intake system for the 2001 f350 7.3 and want to hear from you guys on what you think is the best one and where to order it from. The Beast is sitting on 37x13.50 and used to tow from Ca to Arizona a 24' enclosed trailer with the HD's inside.. I am saving for the turbo rebuild...so let me hear it guys...
Hotshot
Joined: Dec 2012
Posts: 11,266
Likes: 1,649
From: Las Cruces New Mexico
Bar none the cheapest(prize wise) of them all 6637 mod. Loud turbo whistle
Factory AIS (oem upgrade) Quietest
S&B AIS (factory location but higher flow rate than the top 2) according with some members ive never run theae syste Noise? No experience.
Factory AIS (oem upgrade) Quietest
S&B AIS (factory location but higher flow rate than the top 2) according with some members ive never run theae syste Noise? No experience.
Post Fiend
Joined: Mar 2015
Posts: 5,277
Likes: 32
From: Blairsville, Pennsylvania
I have the severe duty AIS, like it.
About to do fender mod, I've been sucking the filter minder most of the way closed.
AIS and S&B were LARGE price difference when I bought my AIS last year. Now they are getting closer. If they were close, I'd consider the better flowing S&B, but still pleased with AIS and the "nearly stock" look.
About to do fender mod, I've been sucking the filter minder most of the way closed.
AIS and S&B were LARGE price difference when I bought my AIS last year. Now they are getting closer. If they were close, I'd consider the better flowing S&B, but still pleased with AIS and the "nearly stock" look.
Cargo Master
Joined: Feb 2010
Posts: 2,298
Likes: 94
From: Delta, CO
I have the severe duty AIS, like it.
About to do fender mod, I've been sucking the filter minder most of the way closed.
AIS and S&B were LARGE price difference when I bought my AIS last year. Now they are getting closer. If they were close, I'd consider the better flowing S&B, but still pleased with AIS and the "nearly stock" look.
About to do fender mod, I've been sucking the filter minder most of the way closed.
AIS and S&B were LARGE price difference when I bought my AIS last year. Now they are getting closer. If they were close, I'd consider the better flowing S&B, but still pleased with AIS and the "nearly stock" look.
I did the fender mod part of the deal when I installed mine & I believe I paid $25 for the foam snorkel, if I did it again I would just cut a beer can coozie & saved the $25.
Logistics Pro
Joined: Apr 2011
Posts: 4,744
Likes: 5
From: Earth
I have the severe duty AIS, like it.
About to do fender mod, I've been sucking the filter minder most of the way closed.
AIS and S&B were LARGE price difference when I bought my AIS last year. Now they are getting closer. If they were close, I'd consider the better flowing S&B, but still pleased with AIS and the "nearly stock" look.
About to do fender mod, I've been sucking the filter minder most of the way closed.
AIS and S&B were LARGE price difference when I bought my AIS last year. Now they are getting closer. If they were close, I'd consider the better flowing S&B, but still pleased with AIS and the "nearly stock" look.
Just food for thoughts, as for the original question the 6637, no experience there, OEM and AIS (OEM upfit) I have ran, OEM (rectangle) sucked badly (in every form of the word) and the AIS does the same, but its so much less restrictive and does not let dust in, I change filters every 20,000 miles (every 4 oil changes) which I am about due again UUUG...but its worth it with out a question!
OEM:
OEM AIS:
Can you tell which was OEM and which was the "After Market"?
Post Fiend
Joined: Mar 2015
Posts: 5,277
Likes: 32
From: Blairsville, Pennsylvania
Which one was aftermarket? LOL!
Yeah, I made sure the flap was out of the way and the air cavity was open. There is a thread on it somewhere
Good thought though, had to chase that down earlier 
I am running GH tunes and WW1. I don't have the fender sleeve in yet. Getting ready to do oil cooler orings this week. Really bad U-joint last week.
Some weeks it is all about the tail chasing
Yeah, I made sure the flap was out of the way and the air cavity was open. There is a thread on it somewhere
Good thought though, had to chase that down earlier I am running GH tunes and WW1. I don't have the fender sleeve in yet. Getting ready to do oil cooler orings this week. Really bad U-joint last week.
Some weeks it is all about the tail chasing
Trending Topics
Post Fiend
Joined: Mar 2015
Posts: 5,277
Likes: 32
From: Blairsville, Pennsylvania
FYI. Here are some pics of the end of the tube of the AIS intake:
https://www.ford-trucks.com/forums/1...l#post15266532
https://www.ford-trucks.com/forums/1...l#post15266532
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Hotshot
Joined: Jan 2011
Posts: 18,849
Likes: 179
From: Puget Sound
I've been in trucks with the 6637 - it drove me crazy. I had the Ford AIS (my favorite by far), and I acquired a stock filter minder, because the one that comes with the AIS is weaker. I upgraded my injectors and that surpassed the capacity of the Ford AIS - so I installed the S&B. While the S&B is not as quiet as the Ford AIS, it's far quieter than the 6637.
If you never do an injector upgrade, my vote will always be the Ford AIS. Quiet, breathes better than stock, and 20K between filter changes.
If you never do an injector upgrade, my vote will always be the Ford AIS. Quiet, breathes better than stock, and 20K between filter changes.
Senior User
Joined: Dec 2015
Posts: 256
Likes: 1
From: OKC
If you do that zoodad mod or whatever it's called you might consider a closed off one instead of an open element. I like the sound of the open element filters but I also have a banks monster muffler so it's still not loud enough to **** my neighbors off.
That filter didn't stay that nice yellow color for long, it's so faded now I need a sleeve. Looking back I would have rather done the 6637 or an S&B or the AIS, that AFE was waaaaay to expensive and the hp gain the intake manufactures hype about is nonsense.
Fleet Mechanic
Joined: Aug 2006
Posts: 1,465
Likes: 17
From: Jacksonville, FL
6637 for me, I don't find it too loud TBH. Plus there is also the noise cancelling **** on my stereo if I ever do find it too loud. The 6637 seems to flow fine and i have had no issues with it to date, about a year running it now. Plus it is a nice cheap option if funds a re a little tight for you!
Lead Driver
Joined: Jun 2007
Posts: 7,760
Likes: 27
From: Hampton, Maryland.
I had the 6637 for years, it didn't bother me at all. When I went with the bigger injectors (and now the 38R) I upped it to the S&B due to better flow numbers, and I like it. They have changed the design a little bit, but the one thing I don't like is the almost total dis-assembly whenever I need to do anything with the intake tubes on the drivers side. For that, the 6637 was the easiest to deal with.
Cargo Master
Joined: Oct 2011
Posts: 2,867
Likes: 766
From: SoCal/Wyoming
I went from stock to Airaid to the AIS. OP, my truck is set up similar to yours and I also pull a 20 foot car hauler around. If you do go with the AIS, I would recommend the fender sleeve. While you are paying almost 30 bucks (if I recall correctly, costs more to ship it than the cost of the foam) for a piece of hard foam, it makes all the difference if you also run a tuner. Before the fender sleeve I would always reset the filter minder every time I opened the hood. Now the filter minder does not move.
