New Exhaust Manifold Advice

[latvius]

I have a 2005 Denali Yukon and am going to have the broken exhaust bolts replaced and want to replace the original manifolds. I want to keep the existing stock exhaust so I need them to bolt up like factory. I was told someone sells some SS "header" type manifolds that would bolt up. Replies appreciated.

* I already bought the ARP bolts*

 

[Joseph Garcia]

Unless you are doing some major engine mods, your stock exhaust manifold is more than sufficient for your motor. Any shorty headers won't improve performance.

The best improvement that you can make, assuming that you are going to remove the broken bolts is to replace them with ARP brand bolts. This way, you won't have to replace them again.

 

[latvius]

Yeah I got the ARP bolts to be installed just want to replace the manifolds with the best option

 

[Marky Dissod]

... someone sells some SS "header" type manifolds that would bolt up ...

Might be better to show, than tell here - pics?
That said, unless your engine spends most of its time OVER 4000RpM, negligible additional power (stopwatch might not care) from 'shorty' headers.

 

[latvius]

Might be better to show, than tell here - pics?
That said, unless your engine spends most of its time OVER 4000RpM, negligible additional power (stopwatch might not care) from 'shorty' headers.

You cut off the part where I said "I was told" so I don't have any pictures.

 

[Mudsport96]

Yes, there are stainless shorties, but unless you are a fan of increased underhood temperature and gasket sealing problems, you are better off going back with a factory manifold.