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Quiet Mufflers?

rcamacho

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I'm running a BBC with headers and a RV cam. There are currently some smallish turbo style mufflers on it and it's very loud. Any suggestions on replacement 2 1/2" versions? I understand that a larger case is desirable. I'm considering the Flowmaster 70 series as I've had fiberglass mufflers burn out the material inside before.
 
I run a set of the Flowmaster 70 series on my BBC. Much better than the 40's that were on it, but they are VERY big canisters. Almost 24" long (each)....

From what I remember the 70-series was supposed to be the quietest option in the Flowmaster lineup.


/forums/images/graemlins/thinking.gif
 
I have turbo mufflers(2" pipes), but they are pretty quiet. Wish I had 40 series FM /forums/images/graemlins/whistling.gif
 
The 70 Series is the quietest muffler Flowmaster makes, or you could go with a MagnaFlow 5" x 11" x 22" muffler, it is straight through so no performance loss like the Flowmaster. Oh yea.. it has a lifetime warranty as well, they do not use fiberglass so no worries of it blowing out, but if for some odd reason it did you can just exchange it for a new one. /forums/images/graemlins/peace.gif
 
I use to run 2-1/2" Summit Turbos on my ElCamino. They were pretty quiet until you got on them.

Think they were under $15/ea so even if they dont work out, cheap enough to try /forums/images/graemlins/thinking.gif
 
Just bought a DynoMax 17749 from Summit to replace the previous one that only lasted 50k miles on the WonderYota. It's a 2.25"/2.25" double offset muffler and is pretty quiet. I favor quiet, doesn't attract unwanted attention, like from folks in BRB's profession. Search out the DynoMax page, there is a pdf download of all of the different configurations and each is marked "Street" (quietest), "Sport" (louder), or "Race". The numbers above each muffler's diagram in the .pdf like "XXX/xxx" are approx max HP Single/Dual exhaust.
 
I had an exhaust put on by midas with these two oem style truck mufflers 2 1/2 inch. With my 390 stroker and headers you could not hear it, the sound of the air was louder.
 

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