20032500HD

i have the 6.0L. does anyone know of the best exhaust to run with? im looking for something with a good rumble but quiet on the highways when im cruisin on trips.

02HEAVYDUTY

I've got a Magna Flow Side Exit exhaust on my 02 and its sounds great. Has a great rumble when you get going but tones down on the highway a little. I've had Magna Flow Exhaust Systemson 3 differenttrucks and I've never had a problem with them and they have always sounded great.

Fireguy8

A co-worker of mine just installed a Magnaflow system on his 07 Z71 NBS and it sounds very good. I haven`t made up my mind if I want that or the new Gibson on my NBS Crew cab 5.3

02HEAVYDUTY

Gibson make great sounding systems too. A friend of mine had one on his 5.2L Dakota and it had a really great sound too. Either or would probably do great for your truck.

Mcguinness

I have a flowmaster 50 series suv-performance setup with dual pipes and it is not at all loud at highway speeds,Infact it has a nice low hum but get down on it and the rumble of thunder will roar like a beast awakened!!!
Just enough mustard

eric2007ltz

I am looking for exhaust and intake also for my 6.0 so many choices, lol

Mcguinness

40 Series Mufflers
Deep powerful sound outside of the vehicle, interior
resonance in most all applications at different
R.P.M. levels.
Recommendations:
Generally used on early and late-model street/strip
vehicles with or without catalytic converters seeking
a more aggressive tone. An H-Pipe is strongly
recommended in all dual exhaust systems.

50 Series Mufflers
Mellow yet powerful sound in most applications.
Quieter than 40 Series mufflers outside. A special
"Tuning Chamber" helps reduce interior resonance
at most driving speeds.
Recommendations:
Most all street/strip applications with or without
catalytic converters. Off-Road/Race applications.
An H-Pipe is strongly recommended in all dual
exhaust systems.

30 Series Mufflers
Mellow yet powerful tone. The sound level is a little
quieter than the "50 Series" outside of the vehicle,
but with more of that "original Flowmaster sound."
The combination of added case volume and the
unique "volume chamber" creates a larger low
pressure area behind the chamber than a "50
Series" muffler. This leads to better scavenging of
exhaust gases, and a sound that is exclusive to the
"30 Series" muffler.
Recommendations:
For use on all high performance street/strip
applications. Use on Late Model Trucks with single
exhaust and catalytic converters that prefer more
tone, or trucks with dual exhaust. An H-Pipe is
strongly recommended in all dual exhaust systems.

Big Block Series Mufflers
Mellow tone. Increased volume of case size and a
specially developed "Tuning Chamber" makes this
the quietest muffles in the Flowmaster Line, both
inside the vehicle, and outside the vehicle.
Recommendations:
For use on all high performance street vehicles,
Chevy/GMC Suburbans, Tahoes, Yukons, trucks
used as tow vehicles, and most all Motorhome/R.V.
applications. An H-Pipe is strongly recommended
in all dual exhaust systems.

jkgriner

My favorite is true dual straight pipes. They can be quiet when you want, or loud as hell....while driving I can't hear them in my cab. They have a great low rumble w/ 3" tips on em too.