Hey All,

Sorry to have another muffler question, but I am not finding an answer otherwise.

1992 F150 5.8L 4X4 extra cab. My manifolds were cracked, so I installed a set of pacesetter full length headers. By the way, they are great and fit perfectly! I had the muffler shop reduce to 2 1/2#, run the driver side between the transmission and transfer case, then turn it into the passenger side (I wish he would have not run the driver side straight into the side of the passenger side, but whatever). He then ran it to my existing mellow tone single in duel out muffler with existing duels out the back. It sounds awesome! But I am wanting to ditch the duels and go with a single 2 1/2" out in front of the right rear tire. I am also wanting to go with a magnaflow muffler because of the straight through design.

The only magnaflows that are at the parts stores are 14" and I think they would be too loud. I thought I had decided on an 18" but that might be too loud also. I pull a camper with this truck and when I am pulling hills and such, it is pretty loud. I dont want to desturb everyone if I am coming into a campground late or really early.

So I cant decide between the 18" and the 22". I have read that the 22" is very quiet and sounds like stock which is not what I want (I do want it to sound like a truck should), but most of those reviews are with exhaust manifolds, cats, pipes all the way out the back. I only have full legnth headers, 2 1/2" two into one, and a single magnaflow out the side.

Any thoughts?

 

Bump bump

 

The longer any muffler is, the less chance it has to resonate to obnoxious levels.

With the pre-muffler setup you have, go for the longest muffler you can fit in there. If you can fit in a glasspack as a resonator, that may help as well.

 

Thanks for the reply. I am just trying to find someone with a similar setup as mine that has used either the 18" or 22" magnaflow muffler. Magnaflow's website has several samples to hear, but they are all newer vehicles with cats and stock manifolds, so I dont think it is much comparison.

I dont want it as quiet as possible, just not too loud. I dont have any drone or resonating now, and hopefully I wont have any when I do the change. I am thinking of going with the 18" and if it is too loud, then I will just sell it and go with the 22".

Thanks

 

My father has a 5.4L Triton. Recently he got rid of the Y pipe and used a Magna Flow 2-in 2-out muffler as his X-pipe. I really like the sound of his truck.He picked the most aggressive sounding Magna Flow muffler because he wanted it to sound similar to my truck. My 92 F150 with a 5.0L that has shorty headers, Bassani Y-pipe going into a 1-in 2-out 2 chamber flow master muffler with dumps.

Flow Master = more aggressive in my opinion on the 5.0L. I have 1 cat. Although his motor is different then mine.

Magna Flow = has a deeper tone through the RPM band on the 5.4L seems more muffled but he still has 2 cats on his f150.

That's the differences that I noticed.

 

You can always aim the exhaust at the ground to help reduce noise. I did that on my 4.9 I-6 with a Flowmaster 50 and it's exactly the same as stock with a downpipe.