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New Muffler For The Ole Silverado

CamZ71

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CamZ71 Enthusiast

CamZ71

Posted
Posted

I was wondering what would be a good muffler for my 04 silverado ext cab 5.3. Everything is stock except for a K&N CAI, super chips and 20 in wheels. Right now i have from what i think is a flowmaster 40 series dumped and every once an while when i rev it, i hear some sort of rattle but after im driving down the road for awhile it wont do it when i rev. I went to a muffler shop and they said everything inside the muffler was broken :) . I just want a muffler that has a good deep sound and thats not to raspy when gas it. I heard the Flowmaster american thunder series and thought it was pretty good. Any suggestions and anyone know of a good muffler shop in Amarillo, Tx? Thanks again.

Stevens03 Senior Enthusiast

Stevens03

Posted
Posted

Magnaflow hands down for the 5.3L :) I've had the "american thunder" and its just a 30-series muffler. A little quieter than the 40-series. My opinion of FM is they are junk. They only last about 2-3 years where you have winters.

sic lsx Senior Enthusiast

sic lsx

Posted
Posted

love my dynomax vt 100% no drone and sounds stock cruising and when u floor it valve opens and flows 300 more CFM then maganflow and even much more then flowdisaster

CamZ71 Enthusiast

CamZ71

Posted
  • Author
Posted

Well i have been youtubing some videos on the magnaflow and cherry bomb and theres one of the magnaflow

that sounds good and theres the cherry bomb
that sounds awesome. I know that this doesnt do much justice on the sound since its on a camera and not in person. I have heard some dynoflow in person but not the magnaflow or cherry bomb. I just want something with a deep rumble and sounds good when accelerating and when i floor it oh and im thinking of duals straight out the back or a single rear exit. Thanks for the input too guys!! :)
berteras Enthusiast

berteras

Posted
Posted

Kinda hard to judge those videos unless they were shot with the same camera, conditions and angles! I have no experience with the cherry bomb, but magnaflow is a great muffler. Sounds great and will last a long time. I had one on a 6.0 and I'm about to order one for my 5.3.

GMstrong Enthusiast

GMstrong

Posted
Posted

camZ71.muffler delete might get you an extra 5hp depending on the mods you have already,but you could lose mpg's.straight or hollowing out the cat is plan stupid.you'll lose hp and mpg.

KMGZ400 Senior Enthusiast

KMGZ400

Posted
Posted

not many people are gonna say go with a flowmaster, but i have a 40 for my 5.3 and i love it. perfect volume

travishale84 Enthusiast

travishale84

Posted
Posted

i have always used flowmaster mufflers. i have had the 50 series, 40 series, and super 44. i loved them all. never kept them on long enough for them to rot out. i started with the 50 SI/SO, and it was too quiet, then bought the 40 series SI/SO. then i found a smokin deal on a super 44 SI/DO. i have since sold that truck

 

on my 2011 sierra i put a 14" magnaflow. it is very nice because is as quiet as stock while cruising. once you get on the throttle you can tell its there. the one thing i dont like about my magnaflow is that its too mellow sounding.

 

i just found another good deal on a SI/DO for my 2011. so i gave into temptation and bought another 40 series flowmaster SI/DO.

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