Aftermarket Exhaust Option

[Zaab]

Does anyone have aftermarket exhaust recommendation? Mine has a minor exhaust leak around the manifold and I was thinking, if I'm going to work on it, why not install a better one? Mainly looking for reduced back pressure while maintain the same level of volume.

 

[Mooseman]

Since you have the 5.3, systems for the TBSS with the 6.0 will work except for those that specify that only work with 2WD (mostly headers).

If looking for an aftermarket replacement for the stock system (i.e. quiet), check the mufflers as some are necked down inside. Not sure for the 5.3 but the 4.2 uses an oddball 2.75" pipe and the aftermarket mufflers (Walker for sure) are necked down from 2.75" to 2.5".

We do have this thread:

Thread 'Exhaust Recommendations?'

May 3, 2017

So I'm getting the mod itch again, and I've done some searching on here and it seems to be a toss up between Magnaflow and Flowmaster. I plan on keeping the factory setup and resonator, just swapping out the muffler. Seems a little counter intuitive, but I'm looking for noise, while keeping it looking stock. Other mods are coming later performance wise, I just wanna hear this thing rumble, and hear it a bit when accelerating.

I'm torn because I like the sound of the Flowmaster 40, but I don't want obnoxious drone in the cabin. There doesn't appear to be too many videos with it on the 5.3...

• Mike534x
• Replies: 25
• Forum: Vortec 5.3L V8

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