Make my 5.3 sound like a 6.2. HELP.

[Blazed]

While we have Jenna in a thread.
Is it possible to literally take the entire exhaust from an escalade headers all the way to resonator and put it on a 5.3 Tahoe?

 

[Goodinblack]

^^^^ Going from a 2.75 inch exhaust to a 3.5 may be a bad idea. Would really have no low end left. Someone correct me if I am wrong please.

 

[JennaBear]

I don't think the headers would fit your 5.3L without some major changes.

 

[Blazed]

Would put manga flow 12909 if that helps someone with possibly correcting or agreeing with goodinblack

 

[totheyard]

I am sure GM made their stock exhaust pipe a certain size for a reason. Some back pressure is good.

 

[Blazed]

No no no that could be right lol I'm sure they did but I can't imagine that the .9 liter of extra engine requires an inch wider exhaust

 

[Blazed]

Jenna are the headers even different? As far as piping size or does the size difference start at the y pipe?
My mom has an escalade and I've tried to figure this out. To me it looks like the piping the same until the y pipe right before the flange.....? Correct me if I'm wrong.


To clarify I think the tubing going into the y pipe is the same on 6.2 and 5.3 alike but the output of the y pipe is a 3.5 on the 6.2. So basically the 5.3 just constricts at the y?

 

[totheyard]

No no no that could be right lol I'm sure they did but I can't imagine that the .9 liter of extra engine requires an inch wider exhaust

There is a big difference in displacement. 5.3 = 325, 6.2 = 376

 

[JennaBear]

I think the Y pipe would be the biggest issue. We used the same headers on our 6.0L, and when we swapped to L92 heads.

 

[Blazed]

How would the y pipe create an issue if I'm replacing the entire exhaust