GM Engine & Exhaust Performance EFI | GEN I/GEN II/GEN III/GEN IV Engines |Small Block | Big Block |

Header

Thread Tools
 
Search this Thread
 
Old Mar 26, 2007 | 01:58 PM
  #1  
GreenBlood's Avatar
Thread Starter
TECH Addict
iTrader: (6)
 
Joined: Aug 2006
Posts: 2,311
Likes: 0
From: Schiller Park (NW burb of Chicago)
Default Header

Ok, so I just replaced the dual in single out muffler on my truck with 2 bullet mufflers, so now i have true duals...The tone is really deep and almost bass-like...I can set off car alarms...However it doesn't seem very loud all around, just really deep...I am not looking for a high pitch, just a lil louder in the upper RPM range...I was thinking about ditching the stock cats and buying either the magnaflow or carsound highflow cats setup...would that help at all, I know it will flow better, so thats a plus..any opinion on headers? I want to keep my cats, so i'll go with shorties if I have to...performance isn't a major issue, just sound...
Reply
Old Mar 26, 2007 | 09:42 PM
  #2  
nativetexan's Avatar
13 Second Truck Club
 
Joined: May 2004
Posts: 774
Likes: 0
From: East Texas
Default

Don't go shorties unless you have to. Your stockers are basically a shorty. If you want to run cats look into a good mid-length header like the Thorley Tri-Y. I have those and some short high flow cats. It takes a little cutting and welding which your exhaust shop can do.
Reply
Old Mar 27, 2007 | 03:31 AM
  #3  
GreenBlood's Avatar
Thread Starter
TECH Addict
iTrader: (6)
 
Joined: Aug 2006
Posts: 2,311
Likes: 0
From: Schiller Park (NW burb of Chicago)
Default

how much are the thorley's,i have searched for them before but never really found any pricing...
Reply
Old Mar 27, 2007 | 08:17 AM
  #4  
nativetexan's Avatar
13 Second Truck Club
 
Joined: May 2004
Posts: 774
Likes: 0
From: East Texas
Default

They are around $350. Check Summit or Anythingauto.
Reply
Old Mar 27, 2007 | 09:37 AM
  #5  
ricoc's Avatar
On The Tree
 
Joined: Sep 2006
Posts: 152
Likes: 0
From: PG BC CDN
Default

If its all about sound have you flipped your aircleaner cover over yet? Intake can make enough noise at high RPM, sometimes more than exhaust!
Reply
Old Mar 27, 2007 | 11:05 AM
  #6  
GreenBlood's Avatar
Thread Starter
TECH Addict
iTrader: (6)
 
Joined: Aug 2006
Posts: 2,311
Likes: 0
From: Schiller Park (NW burb of Chicago)
Default

nah, I am nt gonna flip it over because I am probably gonna buy a new intake...being that the silverado and tahoe of that year both have th same 5.7 vortec, will the headers from a silverado fit the tahoe, or is there a different fitment within the engine comparment?
Reply
Old Mar 27, 2007 | 12:01 PM
  #7  
GreenBlood's Avatar
Thread Starter
TECH Addict
iTrader: (6)
 
Joined: Aug 2006
Posts: 2,311
Likes: 0
From: Schiller Park (NW burb of Chicago)
Default

I am thinking hooker long tubes, I found them on summit for 410 bucks...will i notice a big difference in sound and performance? Does anyone use these? do they have any emissions equipment? I don't wanna do my whole exhaust over because the 2 mufflers are in the stock location...should i get some highflow cats and have them route the exhaust the way it is stock, or should i go catless and have an x or h pipe put in place? Is it possible to bend the piping from the x or h pipe the reach the mufflers in the stock location?
Reply
Old Mar 27, 2007 | 12:01 PM
  #8  
GreenBlood's Avatar
Thread Starter
TECH Addict
iTrader: (6)
 
Joined: Aug 2006
Posts: 2,311
Likes: 0
From: Schiller Park (NW burb of Chicago)
Default

I want to pass emissions, so would a tune help me out?
Reply
Old Mar 27, 2007 | 01:23 PM
  #9  
BLACK04VHO's Avatar
Launching!
iTrader: (2)
 
Joined: May 2006
Posts: 289
Likes: 0
Default

I would do LT's with some replacement cats. Also put in a x pipe to sop some of the opping and give it a better tone. Or leave your stock manifolds replace cats and throw in a x pipe. I think you will like the sound.
Reply
Old Mar 27, 2007 | 01:24 PM
  #10  
BLACK04VHO's Avatar
Launching!
iTrader: (2)
 
Joined: May 2006
Posts: 289
Likes: 0
Default

If yu want it louder up top get you some 1 chamber flowmasters. I am not crazy about flows but I had them on my 97 and they sounded badass when I took off my cats completely and they flow alot better then the 40 series..
Reply



All times are GMT -5. The time now is 07:01 AM.