2006 GMC Sierra 1500 Z71 Crew 5.3L True Duals Flowmaster 40s 2.5" Stock Cats

[duklsmith1]

Did you have the stock cats on there?

[acdclover66]

So how much did this set up cost? Cause it sounds pretty beastly but I might get super 44's.

[ChevyZ71djd]

thumbs up

[reddragon913]

I have a true dual with 40 series on my 03' Silverado ..sound just like ure .love it !!!

[nuggzson111]

nice liscence plate

[jmc9109]

very nice

[NDchevyguy]

@tbrd180

I still have the stock cats and headers. They pop a little when I'm going down a steep hill, but it's not bad.

@dimmuborgir6nik6

From the factory it comes off the headers into the cats and then it goes into a Y pipe and goes to the muffler and then out. I took off the Y and have 2.5" pipe all the way back. The flowmaster mufflers sit right beside eachother straight up and down (no room otherwise) and they are about in the same location as the stock muffler.

[denny099999999]

@NDchevyguy how do u like those flowmasters.. i was going to go with flowmasters until my mechanic buddy told me they really restrict the exhaust flow.. do u seem to have any problems like this? so i went with a 3 inch strait pipe hollowed out the cats, and went with some off brand chrome glasspacks and 3.5 inch tips the glasspacks really pops with the 3 inch exhaust. aside from that . u have one nice sounding z71.also did u do it yourself or have a shop do it?

[dimmuborgir6nik6]

Where does your exhaust split and where did you put your 2nd muffler? Looking for ideas to run true duals.

[tbrd180]

i have a 2004 5.3 vortec sierra.. i am going to get true dual flowmaster 40's with 4 inch tips.. is this what they would sound like? do they pop at all? and are these just straight pipes with mufflers then going out the back?

[6824096]

nice sound. do a video with just driving around so i could hear how they sound from day to day basis.

[InShatteredMolds]

ya that sounds tits man, flowmasters on a 327, own

[Metallica1071991]

325*

[InShatteredMolds]

you know what i mean:P its like the ls2, its a 364 but some say on numbers its a 366 or something to that effect.

[dwraider9]

what size tip are those

[ryguysierra]

hey man can you get me a part number for the mufflers?

[knicholas83107]

u dont need a part number..if u go to a shop or store just tell them or look for a super 40 flowmaster muffler

[arcticcrossfire600]

dude get a ford f-350 super duty and put some nice stacks on it.. 30 times louder

[Raptor350Man]

she sounds nasty bro. do you think its loud? or quiet because i was going to put true duals on my sierra but my buddy has them on his trucck and they are quiet. it must be the mufflers

[titan56l]

@Raptor350Man well no shit... just dumb

[stakenbodies]

@Raptor350Man

Stock cats keep noise level down. My 2003 5.3L tahoe has tru dual exhaust with Glasspack Thrush mufflers. Sounds meaty but doesn't rap off.