Can anyone identify these headers?
Thread Starter
Junior Member
Joined: Mar 2010
Posts: 14
Likes: 0
From: Arlington, Tx
Car: 87 GTA
Engine: L98
Transmission: TH350
Axle/Gears: 3:42
Can anyone identify these headers?
I got these headers cheap and can not figure out what brand they are. The air tube comes out the center of the headers. If anyone knows what kind they are let me know. Thanks
Last edited by rhino1; Apr 16, 2017 at 09:04 PM. Reason: Spelling
Joined: Feb 2017
Posts: 4,185
Likes: 576
From: Meriden, CT 06451
Car: 84 TA orig. 305 LG4 "H" E4ME
Engine: 334 SBC - stroked 305 M4ME Q-Jet
Transmission: upgraded 700R4 3200 stall
Axle/Gears: 10bolt 4.10 Posi w Lakewood TA Bars
Re: Can anyone identify these headers?
I've never seen a set with a single air tube like that.
But that seems like one of those, "DUH, why didn't GM do it that way?" moments.
So simple. Especially since the air injection was just to dilute the exhaust so the cars could get through emissions at the time.
But that seems like one of those, "DUH, why didn't GM do it that way?" moments.
So simple. Especially since the air injection was just to dilute the exhaust so the cars could get through emissions at the time.
Supreme Member
Joined: Jan 2000
Posts: 3,178
Likes: 48
From: Tracy, CA
Car: '87 IROC
Engine: LB9
Transmission: TH700R4
Re: Can anyone identify these headers?
While Secondary Air Injection does dilute the exhaust, its primary function is to promote combustion of unburnt fuel present in the exhaust by adding additional air into the exhaust manifold and into the catalytic converter to help with the conversion process.
Joined: Feb 2017
Posts: 4,185
Likes: 576
From: Meriden, CT 06451
Car: 84 TA orig. 305 LG4 "H" E4ME
Engine: 334 SBC - stroked 305 M4ME Q-Jet
Transmission: upgraded 700R4 3200 stall
Axle/Gears: 10bolt 4.10 Posi w Lakewood TA Bars
Re: Can anyone identify these headers?
Yeah, that's exactly what GM wanted us all to believe.
They admitted years later about the dilution.
That's why air injection was removed when they switched to fuel injection.
They admitted years later about the dilution.
That's why air injection was removed when they switched to fuel injection.