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Re: Mufflers? [Re: Cab_Burge] #2851916
11/26/20 03:49 PM
11/26/20 03:49 PM
Joined: Apr 2006
Posts: 3,975
West Plains, MO
DrCharles Offline
master
DrCharles  Offline
master

Joined: Apr 2006
Posts: 3,975
West Plains, MO
While we're waiting for OP, here's where my tailpipes are (the turndowns are stuck right in the glasspacks). Mufflers are in the stock A-body locations.

Part of the problem is that there's no back seat and a sheet metal trunk-firewall with no sound insulation (so far).

DSCF0188.JPG
Re: Mufflers? [Re: Cab_Burge] #2851919
11/26/20 03:53 PM
11/26/20 03:53 PM
Joined: Jan 2003
Posts: 16,271
So Near, Yet So Far
topside Offline
I Live Here
topside  Offline
I Live Here

Joined: Jan 2003
Posts: 16,271
So Near, Yet So Far
What Cab says, plus:
The shape of the car can matter; had a wagon that I tried 3 sets of mufflers just looking for the right sound and livable loudness.
My muffler shop guy still laughs about that episode.
I've had 2 Dusters that came with Flowmaster 40s that sounded crisp & had a nice bass tone, not tinny; had to add tailpipes to one to quiet one car.
Neither had any drone to speak of, contrary to common experience.
Also there seems to be some difference in the engine's power: a strong 383 sounds different than an average one with the same muffler.
Size as well: my 368" drag car with Race Bullets is a bit quieter than the same system with 448".
I've done 3" with 2.5" tailpipes and it quieted the car; no apparent butt-dyno difference but no ETs to report.
I tend toward the Dynomax SuperTurbos, which also sound different on different cars.
The RR/GTX/etc tips seem to accentuate the exhaust pulses with a crisper tone.
I'm strongly tempted to try their UltraFlows on the current 383 RR; it has SuperTurbos and they're surprisingly quiet all the time.
Unfortunately that video doesn't really tell much about tone when driving.

Re: Mufflers? [Re: topside] #2852020
11/26/20 10:02 PM
11/26/20 10:02 PM
Joined: Jan 2003
Posts: 1,195
Slidell, LA
Ronnman Offline
super stock
Ronnman  Offline
super stock

Joined: Jan 2003
Posts: 1,195
Slidell, LA
To give a sample of driving around in my 383 RR with 2.5” pipe and Welded Ultraflo mufflers #17513 and no X-pipe or H-pipe. The recording was made with the windows down.
Basically stock, with a .474 life purple cam and Demon 750 carb.
Ron



Re: Mufflers? [Re: Ronnman] #2852024
11/26/20 10:11 PM
11/26/20 10:11 PM
Joined: Aug 2007
Posts: 1,493
Middle of A Field
R
RustyMopar01 Offline
pro stock
RustyMopar01  Offline
pro stock
R

Joined: Aug 2007
Posts: 1,493
Middle of A Field
I would lean toward Dynomax or Walker UltraFlos or Super Turbo Mufflers. I did have a pair of Summit Racing Mufflers on another car and they weren't too bad either.

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