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Eshaust suggestions

WJACKSON11X

WJACKSON11X

1/2 ton status
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Mar 12, 2007
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Location
Madison,GA
I have a 91 Burb with a 350. All stock motor and exhaust. I wanting something very mild as far as sound. I don't want it to be loud or "poppy". Should I leave the cat and replace the muffler? I like the factory run exhaust that dumps behind the rear wheel, so I would like to keep that. This truck is very clean and all exhaust tubing is in great shape. If I remove the cat, will it be too loud?

Right now, you can barely hear the exhaust, it is very quiet. I'm just wanting something that sounds decent. Don't care about duals or headers, really just wanting to keep factory look.
 
I would just replace the muffler with a magnaflow, that will give it a nice mild tone change.
 
skunked said:
I would just replace the muffler with a magnaflow, that will give it a nice mild tone change.
Click to expand...

Thanks, I definetly do not want any drone while towing or daily driving. I will stay away from Flowmaster from what I have read.
 
I agree with replacing the muffler. Cat does a decent job of reducing the annoying little popping and crackling, muffler is where your gains will be.

If you can, try running it without a muffler at all (replace with straight pipe), see how that sounds. The 350's I've heard with single exhaust, converter, and no muffler (but full length exhaust) sounded good.

I'm not into that sort of thing, but I can recognize a decent sounding exhaust when I hear it.
 
dyeager535 said:
I agree with replacing the muffler. Cat does a decent job of reducing the annoying little popping and crackling, muffler is where your gains will be.

If you can, try running it without a muffler at all (replace with straight pipe), see how that sounds. The 350's I've heard with single exhaust, converter, and no muffler (but full length exhaust) sounded good.
Click to expand...

Funny you say that, I was about to ask how it would sound with just a cat and with the extra piping on the burb. I may cut the muffler out and straight pipe it. If I don't like it, I guess I can install a new muffler. Lastnight I came real close to cutting out the muffler. I was trying to disconnect it, but the calmp was on so tight, that it crushed the pipe enough to make removing it impossible.
 
skunked said:
I would just replace the muffler with a magnaflow, that will give it a nice mild tone change.
Click to expand...


Word. My truck came with a sweet dual side pipe magnaflow that dumped behind the tires. Sounded good but got squashed the first time out. I cut the exhaust off at the muffler now and it sounds pretty sweet lol. Louder than when it was up at loon lake.
 
fyi low # flow masters are loud .

highest like a 70 = quiet .

and also get delta flow for the extra chamber .

I had a truck with 40 delta flow on it . had that specific rpm drone range .

replaced it few years later with a good used 50 delta flow I found a deal on and WOW just 1 model up made huge difference in inside level of noise.
 
sweetk30 said:
fyi low # flow masters are loud .

highest like a 70 = quiet .

and also get delta flow for the extra chamber .

I had a truck with 40 delta flow on it . had that specific rpm drone range .

replaced it few years later with a good used 50 delta flow I found a deal on and WOW just 1 model up made huge difference in inside level of noise.
Click to expand...


Yeah! My next setup is going to be a single super 10!

I had 40s on a sierra. It was pretty good but like you mentioned i got drone at 65 on the freeway. Made me get headaches if i went for more than an hour that way.
 
Id go for the Flowmaster 70 series.

The burb has a lot of pipe legnth. And the 70 series is the big chamber big block muffler.

It will be barely louder than stock. We had one on my mom's truck, as it came with one, and we never had any complains.
 
I have the Magnaflow muffler that I bought from 4WO|Magnaflow Exhaust before. It's not loud yet will give a nice rumble when accelerating. I have the Flowmaster on my Ram truck and it is really loud but no drone at all.
 
I decided to cut out the muffler and leave the cat. I haven't put a piece of pipe in its place yet, but it sounds exactly like what I wanted. Not too loud but has a little throatiness. Sounds like a truck now! I hoping to get a piece of pipe in there this week. I having trouble finding 2 3/4" tubing.

Even with exhaust dumping under the back seat, it actually is really quiet while crusing down the road. :D
 
i'm not really into loudness, but just to throw this out there: i'm basically done with the swap, but haven't yet made it to the exhaust shop.

i'm running stock manifolds (although these are the later, header-ish vortec ones) stock y-pipe, no converter or muffler(s) and roughly 5 feet of flexpipe from the y-pipe.

600-1400 rpm not loud at all--almost the same as with the flowmasters i was using. However, 2000rpm and above much louder than what i'm comfortable with. In other words pretty damn loud.
 
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