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long tube headers vs exhaust system

05tonkatoy

Full Member
Joined
Jun 7, 2007
Messages
20
Location
phx, az
whats upp everybody well i was wondering what would be better to put in my 05 avalanche 2nd the long tube headers or an exhaust system? i already have a cai system
 
Get the catbacks 1st and the headers later.? Or...both at the same time.

I have them both.? I run Flowmaster 40 and Gibson shorties. Love it.

http://www.fquick.com/garages/Chevrolet/Avalanche/2004/2170/
(Sound Clip)

I almost put my hands on a set of long tube Bassani but changed my mind. ($750 :eek:) Not including changing the "Y" pipes.
 
It really depends on what you have planned. If your going to be replacing everything (one at a time) then most people will go with the exhaust first. If your looking to do the one that will provide you with the most horsepower then a long tube package will be a better way to go. You'll see about a 20-25hp increase while most exhausts will be good for about a 10hp increase. Long tubes also won't change the exhaust's sound much during normal driving. You'll notice it's a little more aggressive when you lay into the throttle.
 
does it make much of a diffrence if the headers are ceramic coated or if there only painted?
 
05tonkatoy said:
does it make much of a diffrence if the headers are ceramic coated or if there only painted?

Go with either stainless or ceramic coated or both. Painted mild steel headers rust from the inside out after about 9 years; ask me how I know.
 
MyBigToy said:
Go with either stainless or ceramic coated or both. Painted mild steel headers rust from the inside out after about 9 years; ask me how I know.
thats good advice...I like SS long tubes w/ no cats and into a 2 in 2 out muffler (to act like an X pipe) and dual out the back....sounds like a truck!
 
o ok and i know this is off topic but are the throttle body spacers really a worthless thing to buy if you want to add more hp and trq?
 
05tonkatoy said:
o ok and i know this is off topic but are the throttle body spacers really a worthless thing to buy if you want to add more hp and trq?

Yes
 
05tonkatoy said:
o ok and i know this is off topic but are the throttle body spacers really a worthless thing to buy if you want to add more hp and trq?


Save your money!? ?For the $100-$125 you would spend on it,buy these.... (y)

Amber DRL's $5
Hood wind deflector $60
Doors wind deflectors $ 45
12 pack of Bud $9

Doing these mods in your driveway.....Priceless :cool:

 
05tonkatoy said:
o ok and i know this is off topic but are the throttle body spacers really a worthless thing to buy if you want to add more hp and trq?

:9:

.....as worthless as descreening a MAF.... :cool:
 
lol ok what kind of headers and exhaust system would u recommend me to put in 4 maximum performance gains?
 
FlaBouy said:
:9:

.....as worthless as descreening a MAF.... :cool:
darn you, i would have gotten away with it too, if it weren't for you meddeling kids :p
 
BigBlackAv said:
darn you, i would have gotten away with it too, if it weren't for you meddeling kids :p

No you wouldn't have... because I would have caught it in the pre-race inspection..... :cool:
 
BigBlackAv said:
darn you, i would have gotten away with it too, if it weren't for you meddeling kids :p

And their dog, too?
 
05tonkatoy said:
lol ok what kind of headers and exhaust system would u recommend me to put in 4 maximum performance gains?

Dynatechs are a top quality, good system; I put them on the Vette and that's what I would install on the Avalanche if I was doing it today. Others like Stainless Works and several have Pacesetters. As far as exhaust, there's not a large difference in performance between any of the hi-flow mufflers. Magnaflow or Borla are probably the highest flowing. You need to determine how high your tolerance level is for noise and/or in-cab resonance before you decide what system is best.
 
I should have added that...my LT's are Stainless Works and my muffler is Magnaflow (the 18" stainless with 2 - 2.5" in and 2 - 2.5" out)
 
BigBlackAv said:
I should have added that...my LT's are Stainless Works and my muffler is Magnaflow (the 18" stainless with 2 - 2.5" in and 2 - 2.5" out)


with one (1-4" in - 1-4" out) descreened MAF.... >:D
 
MyBigToy said:
Dynatechs are a top quality, good system; I put them on the Vette and that's what I would install on the Avalanche if I was doing it today. Others like Stainless Works and several have Pacesetters. As far as exhaust, there's not a large difference in performance between any of the hi-flow mufflers. Magnaflow or Borla are probably the highest flowing. You need to determine how high your tolerance level is for noise and/or in-cab resonance before you decide what system is best.

Nice summery! :)

The Dynatech long tube package with highflow cats and Corsa exhaust are a popular combination. The whole package is stainless steel so you won't have to worry about rust/corrosion.
 
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