Longtube Headers
Thread Starter
Pro
Joined: Nov 2004
Posts: 601
Likes: 1
From: Wa
Longtube Headers
Ok guys i just got my B&B TriFlow CatBack system for my 1996 LT4, I want to get rid of my cats and castiron maifolds and get some longtube headers. What headers will bolt up to the cat back and also have the air injection bungs on them. I dont get emission tests around here so I could care less about Cats.
Racer
Joined: Apr 2002
Posts: 342
Likes: 0
From: new orleans La
Originally Posted by sugarwolf
Will that affect the way the engine runs if u remove all of that air injection system?
If your not running cats then there is no use for air system, just block off the back of the intake manifold. headers and no air pipe also makes spark plugs changes much easier.
Melting Slicks
Joined: Sep 2000
Posts: 2,710
Likes: 1
From: Green Bay WI
Originally Posted by Nathan Plemons
If you're going to remove the cats then you might as well remove the AIR system as well and clean up the engine compartment. The AIR system serves no purpose other than to help the cats light off faster.
I went with EM longtubes which had the AIR bungs already plugged. If you're going to remove the cats, you'll need a custom exhaust setup from the collectors back to the resonator.
Melting Slicks
Joined: Jan 2000
Posts: 3,418
Likes: 1
From: NW Chicago Suburbs
Originally Posted by mikey whipreck
No.
Please do a search, this is debated endlessly
Please do a search, this is debated endlessly
BTW, for an LT1/4 the electric AIR pump is only on for a max of 240 seconds. I've used my scan tool to watch the AIR pump and in 0*F weather it's on for less that 1 minute.
As I am installing my headers, I ripped the AIR sytem out, I will have cats.
Team Owner
Joined: Sep 2003
Posts: 25,295
Likes: 4
From: I'm the walkin dude I can see all of the world...
St. Jude Donor '03
Exotic Muscle is an excellent Header. If you have the money you should go this route but if you want to save money and do more work get some Hooker 2151's. 
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Race Director
Joined: May 2001
Posts: 14,165
Likes: 9
Originally Posted by silver & red CE
On the 94-96 LT1 B-bodies, there is a TSB for disabling the AIR pump. It turns out the LT1/4 can meet OBDII without it. Some folks worry that without an AIR system, the cats will clog. I don't think this is an issue with a properly working ignition systems. As the opti starts dying, it could be an issue.
BTW, for an LT1/4 the electric AIR pump is only on for a max of 240 seconds. I've used my scan tool to watch the AIR pump and in 0*F weather it's on for less that 1 minute.
As I am installing my headers, I ripped the AIR sytem out, I will have cats.
BTW, for an LT1/4 the electric AIR pump is only on for a max of 240 seconds. I've used my scan tool to watch the AIR pump and in 0*F weather it's on for less that 1 minute.
As I am installing my headers, I ripped the AIR sytem out, I will have cats.
Team Owner
Joined: Sep 2003
Posts: 25,295
Likes: 4
From: I'm the walkin dude I can see all of the world...
St. Jude Donor '03
Originally Posted by Nathan Plemons
Why can't they just make it easy. If your car passes the tailpipe test, it passes. If not, it doesn't. Plain and simple.