QUIET TURBO TYPE MUFFLERS???

[kfoz]

MY 76 HAS 2 1/4" DUALS WITH THRUSH MUFFLERS(FLOWMASTER TYPE CASE) and the drone noise inside is awful ! ! !

What turbo type mufflers are out there these days that flow like a flowmaster but have NO DRONE inside the cab???

Thanks!

[outlaw70nova]

I'm assuming that you don't have tailpipes. Taking the exhaust all the way out the back will cure that problem.

[reed85]

I dont know if u like glass packs but i got 24 inch flowtech glass pack that sound great after they broke in they got quieter but sound grean inside and outside the cab and real cheap

[timthescarrd]

Where does your exhaust exit?  I've got long tube headers, dual 2 1/4 exhaust, Thrush turbo dual-offset mufflers, piped straight out the back on my long bed with very little drone.

[kfoz]

My exhaust is full WITH tailpipes,  2 1/4", exiting at an angle behind the rear wheels.

Again, awful drone while idling.  I want quiet but a slight throat upon acceleration.

[Captkaos]

Magnaflow and Dynomax have never droned on my trucks.
I am running Pypes Race Pros on mine and they are QUIET.

[square81]

I've got 2 1/4 duals with Cherry Bomb turbo mufflers. My tail pipes go all the way out. No drone and sound good at highway speed.

[Shifty]

I'm running a welded Ultra-Flo Dynomax, and it sounds fan-flippin-tastic.  It makes me wish I had more engine...

[SkinnyG]

I have Dynomax Super Turbo, and they are almost too quiet.  I, too, can't stand drone.  Not sure if I should have gone Magnaflow instead, but with the Super Turbos, my wife and I can hold a conversation in the cab.

[kfoz]

Thanks skinny..  I WANT too quiet!  I'll check it out!

[SkinnyG]

Sounds A LOT like THIS, except this was with Walker SoundFX mufflers (don't get those).

[kfoz]

I ordered the Super Turbos from Summit ! ! !   Hope I love them!

[Captkaos]

Unless something has changed you will like them.  That is what I ran.

[kfoz]

It's quite amazing how once we creep into our late 40s that we want what our Dads liked when we were kids!!!  QUIET exhaust!!!!!!!!!!!!!!!!!!!!!!

Plus it doesn't do me any good that I have noise sensitivity from over 20 years of being a brick & stone mason ! ! ! 

[mcintyrederek]

You might be satisfied with the mufflers you have already if you installed a crossover pipe.  It takes out that annoying resonance that you probably have at a certain RPM band.

I have cheap glasspacks on my lightly cammed 350 with true duals (no crossover pipe) and the drone noise is out of this world between 40 and 50 MPH, translation, 1600 to 1800 RPM.  Below that it's fine.. above that, it stops resonating.

A friend with a C20 and the same setup installed a crossover pipe with glasspack tubes and it totally cancelled out the resonance but still sounded killer out the back.

There is a certain place, ie, length back from the exhaust manifold that the crossover pipe goes for best effectiveness.  How it's calculated, I'm not sure, but I'm interested now, so I'll Google it.  Attached picture is just one example.

Mack.