Ok ok ok, I’m bored....so I got to thinking....
Yea yea yea, I know that’s dangerous....
So. What makes that stock replacement muffler so, almost stock quite?
I don’t know. But I do now!
These were inexpensive stock replacement style mufflers from dyno max (IIRC) purchased as an experiment on sound control on my ‘79 Magnum w/360/4. Hooker super comp headers are on the engine. There tube size is 1-3/4. The exhaust pipe is 2-1/2. The mufflers inlet & outlet are 2-1/2.
But the inside! The inside says .... as small as 1.7 or 1-45/64. That is where the center outlets pipe slides into the middle muffler pipe, which is 2 inch inside diameter. Hell of a neck down from 2-1/2. That diameter stays inside the muffler for ten inches where it then necks down.
The 4 holes around the center tube are hard to measure and I’m not taking part further. They appear to be about an inch or slightly larger. These holes are the only way to get to the second chamber and to exit the muffler. Yes, there are actually only two tubes in the muffler.
The tabs are not welded. Which was a surprise. Though I haven’t ever had trouble with them leaking or coming loose on any dyno max muffler.
You want a quite muffler? This is it! Super quite. So much so as I could here the gears of the trans mesh. Every rock and pebble.
Other models in the line have smaller inlet/outlet sizes. 2-1/4, 2 inch. I’m sure there insides are the same as this one. The depth of the chamber in the first picture below is close to 9-1/2 while the outlet side (second picture) is 4-1/2 inches deep. Bigger the chamber, the better at sound cancelation. As well as a small tube diameter. The case over all is 24 inches long, 10 X 4 width/height.
These are sizeable mufflers in there length. Probably not very easy to fit on an A body. b & C bodies.... probably OK. They were a bit tight on my ‘79 B.
I hope you enjoyed the fruits of my boring day for a few minutes of entertainment.... If anybody wants to donate a muffler...LMAO.
Yea yea yea, I know that’s dangerous....
So. What makes that stock replacement muffler so, almost stock quite?
I don’t know. But I do now!
These were inexpensive stock replacement style mufflers from dyno max (IIRC) purchased as an experiment on sound control on my ‘79 Magnum w/360/4. Hooker super comp headers are on the engine. There tube size is 1-3/4. The exhaust pipe is 2-1/2. The mufflers inlet & outlet are 2-1/2.
But the inside! The inside says .... as small as 1.7 or 1-45/64. That is where the center outlets pipe slides into the middle muffler pipe, which is 2 inch inside diameter. Hell of a neck down from 2-1/2. That diameter stays inside the muffler for ten inches where it then necks down.
The 4 holes around the center tube are hard to measure and I’m not taking part further. They appear to be about an inch or slightly larger. These holes are the only way to get to the second chamber and to exit the muffler. Yes, there are actually only two tubes in the muffler.
The tabs are not welded. Which was a surprise. Though I haven’t ever had trouble with them leaking or coming loose on any dyno max muffler.
You want a quite muffler? This is it! Super quite. So much so as I could here the gears of the trans mesh. Every rock and pebble.
Other models in the line have smaller inlet/outlet sizes. 2-1/4, 2 inch. I’m sure there insides are the same as this one. The depth of the chamber in the first picture below is close to 9-1/2 while the outlet side (second picture) is 4-1/2 inches deep. Bigger the chamber, the better at sound cancelation. As well as a small tube diameter. The case over all is 24 inches long, 10 X 4 width/height.
These are sizeable mufflers in there length. Probably not very easy to fit on an A body. b & C bodies.... probably OK. They were a bit tight on my ‘79 B.
I hope you enjoyed the fruits of my boring day for a few minutes of entertainment.... If anybody wants to donate a muffler...LMAO.