Need real-world exhaust advise

[peats]

My go to combo is long tube headers, 21/2"flowmaster 50 series mufflers, and 21/2" pipes exiting behind the wheels. No drone and a nice rumble.

 

[Tommy L]

I have 2 1/2" pipe with Flowmaster 50's and I love that setup. Daily driver too!

 

[TotalyHucked]

As stated, 3" is overkill for your engine. Dual 2.5" pipe is good for like 600hp. I've experienced it many times, me and friends have had near identical exhaust setups with the only real difference being my 2.5" vs their 3" pipe and their trucks were always louder/boomier and droned much worse than mine.

Stay away from chambered mufflers, those typically have more drone issues than straight through mufflers. Honestly, I always just get on YouTube and search for similar setups before I buy a muffler I'm interested in. If you like the tone of the muffler but it ends up with a bit of drone, you can always add a small resonator in front of or behind the muffler as well. A Borla XR1 round or oval case would be one of my first suggestions for a good tone/rumble without any drone

 

[78C10BigTen]

As stated, 3" is overkill for your engine. Dual 2.5" pipe is good for like 600hp. I've experienced it many times, me and friends have had near identical exhaust setups with the only real difference being my 2.5" vs their 3" pipe and their trucks were always louder/boomier and droned much worse than mine.

Stay away from chambered mufflers, those typically have more drone issues than straight through mufflers. Honestly, I always just get on YouTube and search for similar setups before I buy a muffler I'm interested in. If you like the tone of the muffler but it ends up with a bit of drone, you can always add a small resonator in front of or behind the muffler as well. A Borla XR1 round or oval case would be one of my first suggestions for a good tone/rumble without any drone

Dems damn expensive

 

[TotalyHucked]

Dems damn expensive

Don't look up a Borla Atak or a Corsa anything then lol

 

[goldpack]

3” all the way is kind of pointless imo at 350hp, a single 2.5” or dual 2.25” would be just fine.

JMO, but I’d go with long tubes, unless if strictly required for fitment reasons, I have a hard time seeing the need for short or mid length headers. As I said, just my opinion.

I made these sidepipes for my 76, 2.5” tubing and resonators as mufflers, it’s not quiet per se, but is totally bearable noise wise ripping down the interstate and does not drone.

you need something like these.

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[Scruffy49]

Ralph is getting 350 swapped, soon. Extrude honed 1992 manifolds, 2.5” pipes into a 2 in 2 out baffled X muffler, dual glasspacks, to turn outs/turn downs.

Have an all 2.5” on a Vortec 350, backed by an NV4500. Ran a Temu sourced chambered X muffler, no tails or turn downs. Sounded great, staying after the carb/hei conversion. Again, extrude honed factory exhaust manifolds. Not a huge header fan.

 

[Frankenchevy]

I have hedman elite long tube headers, dual 2.5 with an h-pipe and borla XS mufflers and have no drone. This was my first crack at a full exhaust and wanted to maximize ground clearance. I’m going to redo it in a similar fashion, but with mandrel bent stainless and a slightly different crossover.

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[Frankenchevy]

I’m about to redo the exhaust on our Burb which will be a y pipe to a 3” universal magnaflow cat, 3” Summit flow master knock off, then up and over the rear axle to the driver’s side rear quarter.

I’m afraid it may drone, but we shall see. I’m putting a v-band clamp on either side of the cat. Interested to see how much the cat acts as a resonator vs a straight section of pipe.

 

[Confused]

On the C10 which is a mild 454 with long tube headers I went 2.5 pipe to magnaflow mufflers in the stock location and 2.5 tail pipes out the back turned down in front of the bumper. I also put two Dynomax Super turbo mufflers under the bed.Removed the spare and you can't see them. It helps I already had the mufflers but I wanted quiet and the engine is louder than the exhaust.

On my old 86 Dodge d150 I had a warm 360 with long tubes into 2.5 pipes to a Flowmaster Y pipe that was 2.5 in/ 3" out. 3" single exhaust into a summit stainless straight through muffler and a late model F 150 3" tailpipe exiting on the pass side. It was quite loud so in went a short 3" Dynomax Super turbo in the tailpipe and all was quiet in the world again.

Now on most applications 2 or 4 mufflers may not have the room or the budget,so what I recommend to kill drone is run the longest case muffler you can fit and if you have drone then glasspacks (longer the better) before the muffler instead of after has worked better for me.

H pipe, X-pipe,or no crossover at all may affect it slightly but that is mostly for pitch and personal preference IMO.