Notices
1999 - 2016 Super Duty 1999 to 2016 Ford F250, F350, F450 and F550 Super Duty with diesel V8 and gas V8 and V10 engines
Sponsored by:
Sponsored by: Real Truck

5.4l muffler replacement

Thread Tools
 
Search this Thread
 
Old Feb 21, 2010 | 04:16 PM
  #1  
79boston150's Avatar
79boston150
Thread Starter
|
New User
Joined: Feb 2008
Posts: 9
Likes: 0
From: Boston, MA
5.4l muffler replacement

I'm looking to swap out the stock muffler on my '04 f250 to a flowmaster. I'm looking to do this without replacing any of the original exhaust piping. I'm currently looking at the flowmaster 40 series and the measurements are 20.5" x 10" x 4.5". I was just wondering if anyone else has done something like this and if the flowmaster will fit without any extra pipe or welding? Thanks in advance.
 
Reply
Old Feb 21, 2010 | 05:21 PM
  #2  
akford351's Avatar
akford351
Posting Guru
Joined: May 2002
Posts: 1,589
Likes: 1
From: AK
You'll need extra pipe to make up the difference... the stock can if pretty long.

You'll also need a 3" ID to 3" ID coupler or band clamp to mate up the extension pipe.

Did it to my Dad's truck with a Flowmaster 40 and replaced that with a Magnaflow XL 3-chamber after the Flow rusted out. I don't recommend the Flowmaster, it only lasted 3 years on his truck.
 
Reply
Old Feb 21, 2010 | 07:57 PM
  #3  
bsfarmer's Avatar
bsfarmer
Senior User
Joined: Dec 2007
Posts: 130
Likes: 0
You'll need extra pipe to make up the difference... the stock can if pretty long.

You'll also need a 3" ID to 3" ID coupler or band clamp to mate up the extension pipe.

Did it to my Dad's truck with a Flowmaster 40 and replaced that with a Magnaflow XL 3-chamber after the Flow rusted out. I don't recommend the Flowmaster, it only lasted 3 years on his truck.
What he said...

I wouldn't recommend a Flowmaster either, compared to other mufflers out there I don't think they flow that great and they resonate in the cab something terrible. I like my Magnaflow, I have no cat, straight 3'' pipe with one of their round style mufflers. Its pretty damn loud now that I've blown the packing out, but it doesn't resonate too bad in the cab. Here's clip of what it sounds liken sled pullin':

Pulling Videos :: F250pull3rdplace.flv video by bradz71 - Photobucket
 
Reply
Old Feb 21, 2010 | 10:03 PM
  #4  
redford's Avatar
redford
FTE Leadership Emeritus
25 Year Member
Liked
Loved
Community Favorite
Joined: Sep 2000
Posts: 23,174
Likes: 1,678
From: Stephensville WI
Club FTE Gold Member
On the 1999-2004 trucks, you'll also want to replace the restrictive factory Y-pipe.
 
Reply
Old Feb 22, 2010 | 10:51 PM
  #5  
dqdave1's Avatar
dqdave1
New User
Joined: May 2009
Posts: 23
Likes: 0
where /who makes a y pipe that does not have the restriction in it?
 
Reply
Old Feb 23, 2010 | 02:04 AM
  #6  
redford's Avatar
redford
FTE Leadership Emeritus
25 Year Member
Liked
Loved
Community Favorite
Joined: Sep 2000
Posts: 23,174
Likes: 1,678
From: Stephensville WI
Club FTE Gold Member
A lot of 2V gas engine owners are using this one. (It fits the V-10 and the 5.4L)

00-04 Ford F250-F350 6.8L V10 Performance Y Pipe : eBay Motors (item 220557297423 end time Feb-25-10 15:35:36 PST)
 
Reply
Old Feb 23, 2010 | 07:59 AM
  #7  
Johnny Langton's Avatar
Johnny Langton
Postmaster
Joined: Oct 2006
Posts: 4,171
Likes: 12
From: SE Texas
Originally Posted by redford
A lot of 2V gas engine owners are using this one. (It fits the V-10 and the 5.4L)

00-04 Ford F250-F350 6.8L V10 Performance Y Pipe : eBay Motors (item 220557297423 end time Feb-25-10 15:35:36 PST)
You can also buy that part from Mike at 5startuning instead of ebay. I ordered one yesterday for the Excursion.
JL
 
Reply
Old Feb 23, 2010 | 09:05 AM
  #8  
Jayman1's Avatar
Jayman1
Freshman User
Joined: Jan 2010
Posts: 44
Likes: 0
How much was the one from Mike? Has it done any improvement for your excursion?
 
Reply
FTE Stories

Ford Trucks for Ford Truck Enthusiasts

story-0

Top 10 Ford Truck Tragedies

 Joe Kucinski
story-1

AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make

 Brett Foote
story-2

Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!

 Michael S. Palmer
story-3

Ford's 2001 Explorer Sportsman Concept Looks For a New Home

 Verdad Gallardo
story-4

10 Best Ford Truck Engines We Miss the Most!

 Joe Kucinski
story-5

2026 Shelby F-150 Off-Road: Better Than a Raptor R?

 Brett Foote
story-6

2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!

 Michael S. Palmer
story-7

10 Most Surprising 2026 Ford Truck Features!

 Joe Kucinski
story-8

Top 10 Ford Trucks Coming to Mecum Indy 2026

 Brett Foote
story-9

5 Best / 5 Worst Ford Truck Wheels of All Time

 Joe Kucinski
Old Feb 23, 2010 | 09:10 AM
  #9  
Johnny Langton's Avatar
Johnny Langton
Postmaster
Joined: Oct 2006
Posts: 4,171
Likes: 12
From: SE Texas
Originally Posted by Jayman1
How much was the one from Mike? Has it done any improvement for your excursion?
It's still on the way-I ordered it yesterday.
JL
 
Reply
Old Feb 23, 2010 | 09:13 AM
  #10  
Jayman1's Avatar
Jayman1
Freshman User
Joined: Jan 2010
Posts: 44
Likes: 0
Oh OK. Let me know how it works out. I may be interested in getting one.
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
mdwilli
Modular V10 (6.8l)
11
Jul 14, 2009 07:50 PM
RangerPilot
1983 - 2012 Ranger & B-Series
15
Sep 11, 2006 05:31 PM
WildThing327
2004 - 2008 F150
5
Jan 2, 2005 12:29 AM
minnesota4x4
Exhaust Systems
9
Mar 30, 2003 03:40 PM




All times are GMT -5. The time now is 11:01 PM.

story-0
Top 10 Ford Truck Tragedies

Slideshow: Top 10 Ford truck tragedies.

By Joe Kucinski | 2026-05-18 19:34:33


VIEW MORE
story-1
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make

And it might be even better than that.

By Brett Foote | 2026-05-18 19:26:42


VIEW MORE
story-2
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!

Slideshow: Does lowering an F-150 Lobo RUIN the ride quality?

By Michael S. Palmer | 2026-05-18 19:20:37


VIEW MORE
story-3
Ford's 2001 Explorer Sportsman Concept Looks For a New Home

Slideshow: Ford's bizarre fishing-themed Explorer concept has resurfaced after spending decades largely forgotten.

By Verdad Gallardo | 2026-05-12 18:07:46


VIEW MORE
story-4
10 Best Ford Truck Engines We Miss the Most!

Slideshow: The 10 best Ford truck engines we miss the most.

By Joe Kucinski | 2026-05-12 13:09:47


VIEW MORE
story-5
2026 Shelby F-150 Off-Road: Better Than a Raptor R?

Slideshow: first look at the 810 hp 2026 Shelby F-150 Off-Road!

By Brett Foote | 2026-05-12 12:50:07


VIEW MORE
story-6
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!

Slideshow: Everything You Need to Know about the 2027 Super Duty Carhartt Package!

By Michael S. Palmer | 2026-05-07 17:51:06


VIEW MORE
story-7
10 Most Surprising 2026 Ford Truck Features!

Slideshow: 10 most surprising Ford truck options/features in 2026.

By Joe Kucinski | 2026-05-05 11:17:22


VIEW MORE
story-8
Top 10 Ford Trucks Coming to Mecum Indy 2026

Slideshow: Here are the top 10 Fords coming to Mecum Indy 2026.

By Brett Foote | 2026-05-04 13:49:49


VIEW MORE
story-9
5 Best / 5 Worst Ford Truck Wheels of All Time

Slideshow: The 5 best and 5 worst Ford truck wheels of all time

By Joe Kucinski | 2026-04-29 16:49:01


VIEW MORE