Stock Muffler
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Fleet Mechanic
Joined: Feb 2004
Posts: 1,902
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From: Northern IL
Stock Muffler
Does anyone know if the stock muffler on the 2005 V10 is clamped on or is it welded on the the pipes?
Im just going to take off the stock muffler and install an FM 50 or 70 series.
Any helpfull tips on this?
Thanks ~Gage~
Im just going to take off the stock muffler and install an FM 50 or 70 series.
Any helpfull tips on this?
Thanks ~Gage~
Guest
Joined: Nov 2004
Posts: 7,988
Likes: 55
From: north west new jersey
gage
it's welded on at both ends ,plus the rear muffler hanger is welded to the mufflers case not the pipe.
best if you have the stock muffler pipe system removed and save it as a just incase you don't like the sound of what you put on,
fm 40 and 50's tend to reverb inside the truck so do some others , banks and a fm 70 seem to be the best bet . i tryed a 40 a 50 and went back to my custom bent 70 sysytem with a 4 inch chrome tip at the end , and i did loose some mpg's over the stock system on my 05 3 valve motor and it does have a ricer like sound at some rpm area's
it's welded on at both ends ,plus the rear muffler hanger is welded to the mufflers case not the pipe.
best if you have the stock muffler pipe system removed and save it as a just incase you don't like the sound of what you put on,
fm 40 and 50's tend to reverb inside the truck so do some others , banks and a fm 70 seem to be the best bet . i tryed a 40 a 50 and went back to my custom bent 70 sysytem with a 4 inch chrome tip at the end , and i did loose some mpg's over the stock system on my 05 3 valve motor and it does have a ricer like sound at some rpm area's
Logistics Pro
Joined: Jan 2002
Posts: 3,733
Likes: 38
Gage the 99-2004 exhaust systems had some design errors...but with 2005 and up they did a real good job of "tuning" the exhaust. Best you can hope for is a little noisier or deeper but not much to be gained and plenty of opportunity to upset the factory balance.
There are combinations that can add power and MPG but there are just as many ways to move the torque curve up in the band and loose average low rpm power and that will cost in higher MPG at cruise RPM. (foot is deeper in the throttle to get same power as before modification)
The days of getting rid of the very restrictive cast iron header and bolting on a set of equal length short or long tube headers, increasing the 1 3/4 inch exhaust pipes to 2" or 2 1/4" and finding a butt load of hidden power are all gone. Ford engineers had to get the most power and MPG possible out of the motor. Yes there are a few ponies still hidden in there, but they are very elusive and can cost a lot to find.
There are combinations that can add power and MPG but there are just as many ways to move the torque curve up in the band and loose average low rpm power and that will cost in higher MPG at cruise RPM. (foot is deeper in the throttle to get same power as before modification)
The days of getting rid of the very restrictive cast iron header and bolting on a set of equal length short or long tube headers, increasing the 1 3/4 inch exhaust pipes to 2" or 2 1/4" and finding a butt load of hidden power are all gone. Ford engineers had to get the most power and MPG possible out of the motor. Yes there are a few ponies still hidden in there, but they are very elusive and can cost a lot to find.
Logistics Pro
Joined: Feb 2000
Posts: 3,955
Likes: 50
From: Mesa
I agree with Fred again damit... 
Take a look at the exhaust manifold on the 05 V10. It actually has ports that slope back towards the exit. Not just a square chunk of cast iron like the 99-04 manifolds. It may not be as good as a header but it has to help flow some what.
Gage, just infront of the muffler, about a foot is the clamp joint. Take it appart there.
Take a look at the exhaust manifold on the 05 V10. It actually has ports that slope back towards the exit. Not just a square chunk of cast iron like the 99-04 manifolds. It may not be as good as a header but it has to help flow some what. Gage, just infront of the muffler, about a foot is the clamp joint. Take it appart there.
Guest
Joined: Nov 2004
Posts: 7,988
Likes: 55
From: north west new jersey
thats the point from where mine starts also.
we just custom made every thing from that point back. solid rod welded to the pipes onto the stock hangers. other then the f.m. 70 and the bigger tip it all matches the stock bends . yes it's a little deeper at idle more so at w.o.t. to say i'm a big block like sound. very little vibration inside compared to a f.m. 40 and 50 series.
v10man
how correct about the 05/6 exhaust manifolds. i have ford racing headers, no differnce on the dyno rollers till way up stairs in rpm. and then it was only a gain of 5hp.not worth the cash it cost over the stock cast iron. the freer flowing exhaust was worth only 2 hp. as fred states it cost's a lot to play , ford has pulled most of it out already.
torqe that you can get more onto the ground. ford has a reduction program built into the pcm to help save the trans. in the lower gears.
NOTE DON"T play with that on a stock trans. the clutch packs can't handle it. with out a increase in line pressure across the board.
we just custom made every thing from that point back. solid rod welded to the pipes onto the stock hangers. other then the f.m. 70 and the bigger tip it all matches the stock bends . yes it's a little deeper at idle more so at w.o.t. to say i'm a big block like sound. very little vibration inside compared to a f.m. 40 and 50 series.
v10man
how correct about the 05/6 exhaust manifolds. i have ford racing headers, no differnce on the dyno rollers till way up stairs in rpm. and then it was only a gain of 5hp.not worth the cash it cost over the stock cast iron. the freer flowing exhaust was worth only 2 hp. as fred states it cost's a lot to play , ford has pulled most of it out already.
torqe that you can get more onto the ground. ford has a reduction program built into the pcm to help save the trans. in the lower gears.
NOTE DON"T play with that on a stock trans. the clutch packs can't handle it. with out a increase in line pressure across the board.
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Posting Guru
Joined: Mar 2002
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From: Vancouver Wash USA
Originally Posted by Gage2502
I didnt know that if iI changed the stock muffler on my 2005 V10 I would loose mpg's
If anything im going to install an FM 70 and see what it sounds like.
Thanks captchas
If anything im going to install an FM 70 and see what it sounds like.
Thanks captchas
From someone with a straight thru 'preformance' muffler; get the FM70 or something very similar in resonance squelching baffles. Lots of guys like 4" or 5", 18" long tips, they say they add a nice rumbly sound.
But no matter what you do it will never sound 'different', or sound like a V8. Ken
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