08 Silverado headers 5.3

[stevo936]

Just recently put a blackbear 89 tune along with an airaid mit. Truck seemed to respond well to it.

 

Would i expect to see a lot more gains with long tube headers? If so what kind are best. Also are there ways to keep the cats without getting custom exhaust work done?

[Jennabear]

Yes midlengths/LTs will net you gains. To keep stock cats, you will need mid lengths but an exhaust shop will need to weld them to the flange. We have sold quite a few Thorley systems for the NNBS and they are real nice sets.

[358429]

Do you all have any experience with the shorty style headers that bolt up with the factory collectors?

[Prokopchuk_9]

Do you all have any experience with the shorty style headers that bolt up with the factory collectors?

 

Ya they make ur wallet lighter

[Jennabear]

Lol, as mentioned above, shorties are not worth it.

[Chris]

Do you all have any experience with the shorty style headers that bolt up with the factory collectors?

Just for looks

 

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[brotherBONES]

Yes midlengths/LTs will net you gains. To keep stock cats, you will need mid lengths but an exhaust shop will need to weld them to the flange. We have sold quite a few Thorley systems for the NNBS and they are real nice sets.

Jennabear,

 

Do you see much in gains from the mid lengths?

 

-Ben

[Chris]

I am going to go shorts for the looks. I like the look of the new flowmaster headers

 

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[kstruckcountry]

Looks? Nothing looks as good as LTs, length matters.

[brotherBONES]

What kind of gains can you expect with longtubes?

 

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[Chris]

Looks? Nothing looks as good as LTs, length matters.

Yes, but mid lengths aren't legal for 04

 

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[kstruckcountry]

They are for me. Just have to liberate the money.

 

I think they can give 15-20 hp Ben

[Prokopchuk_9]

Shorties might give you 10 @ 5500 rpm, maybe a little sound...

 

Some do look okay, ONLY stainless will look ok. Others will rust very quickly, Gibson makes the nicest shorties IMO.

 

FWIW I put shorties on my 2002 didn't feel or hear any difference, waste of money.

[358429]

Thanks for the replies, will keep that in mind.

[music]

I put this together some time back: https://docs.google.com/file/d/0B5cRibDjF1e5RVVvNWoyZWhBQnc/edit?usp=sharing . Not worth the cost, hassle, or problems.