03-04 federal no cat need muffler ideas

[John5.9]

I've got a late 03 QC 6 speed long box and it's a federal truck with no cat ,curious if anyone knows of a good high flow muffler that I can basically just drop in in place of the giant stock one? Any ideas are welcome

 

[AH64ID]

Are you looking for more sound? More flow?

 

[John5.9]

Both, flow and sound

 

[AH64ID]

I don't know of any that have the offset of the OEM one, but you get a muffler elimination pipe and then put a different muffler closer to the cab.

The Donaldson 40" and 51" mufflers are popular, cheap, and sound great. The 40" is a little loud with an exhaust brake, but otherwise I liked it by itself.

40" M085171
51" M090544

 

[John5.9]

Thanks for the info, I thinks the 40 in. One will be good.

 

[JJPage]

Just add a 2nd exhaust driven charger and run a straight pipe....nothing sounds better than a straight piped set of compounds!

 

[JR]

http://www.shuttleworthexhaustsystems.com/

I've got a 5" Shuttleworth and love the tone. I have no resonator and have no drone while towing. It is a straight through type as well so no flow restrictions to worry about.

 

[rscurtis]

Your biggest restriction to flow is the stock turbo if you're still using it. Its cross section is about the size of a golf ball.

 

[Regcabguy]

http://www.shuttleworthexhaustsystems.com/

I've got a 5" Shuttleworth and love the tone. I have no resonator and have no drone while towing. It is a straight through type as well so no flow restrictions to worry about.

Wow! I thought my buddy and I were but a few using the Shuttleworth product. Paul Fox @ Orange Muffler spliced a Shuttleworth into my '07 5.9 over six yrs ago. Throatier sound with no drone. Mine is not the straight through one. Minimal corrosion after living 4 miles from the ocean too.

 

[JR]

Most people have never heard of them but they are a very robust muffler. Built for MDT's and the like and built to last. I actually got mine off of a dump truck that had been totaled. The exhaust system was less than a year old so I cut it off and pieced it together with a new 5" turbo back system.

 

[Joseph Donnelly]

Walker 21471

 

[algonaman]

I don't know of any that have the offset of the OEM one, but you get a muffler elimination pipe and then put a different muffler closer to the cab.

The Donaldson 40" and 51" mufflers are popular, cheap, and sound great. The 40" is a little loud with an exhaust brake, but otherwise I liked it by itself.

40" M085171
51" M090544

X2 I like my Donaldson sounds great with no cat and no baffle.

 

[Wayne M.]

This 40" Donaldson, will it go behind the kitty? What tailpipe are we using? How much $ is the shuttle worth muffler?

 

[Shadrach]

Try a Nelson 86127M 40" OAL x8.5" OD or 86131M 51" OAL x 9" OD. David

 

[Wayne M.]

Try a Nelson 86127M 40" OAL x8.5" OD or 86131M 51" OAL x 9" OD. David

Is there a difference between the Nelson 40" and the Donaldson called out in this thread and elsewhere?

 

[JR]

Wayne I'm honestly not sure what the Shuttleworths cost, I hacked mine out from underneath my cousins dump truck after someone ran an intersection and t boned him. In that link I posted above there is a link at the top of the page for a free quote, you might try that.

 

[Wayne M.]

Walker 21471

Joe, how do you like this Walker model? Hows the db level, drone?

 

[JPul]

Donaldson has several mufflers that have an offset close to stock and a length close to stock. I used an M101168 which is the highest flowing of the bunch. I truly dislike drone and this one isn't bad. The only downside with this muffler is no hangers. There may be aftermarket pipe clamp-on hangers available but I just made my own and welded to the muffler.

Regards, John