Headers, A.I.R. and Dual Cats
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Junior Member
iTrader: (1)
Joined: Jun 2007
Posts: 83
Likes: 4
From: Switzerland, Europe
Car: 91 Z28
Engine: TPI 350
Transmission: T5
Headers, A.I.R. and Dual Cats
Hey there!
I searched the forums now for quite some time but all I got was confused
I got a '91 L98 with Dual Cat setup.
Looking for Headers with AIR that will fit the Dual Cat exhaust system!
I found the SLP ones but sadly they do not produce them anymore :-(
I cannot remove the AIR (law here in Switzerland) and I want to keep the Dual Cats.
Are there any Headers that would "bolt-in" to my car?
Manufacturer and Part Numbers would help me sort things out!
thanks you!
I searched the forums now for quite some time but all I got was confused

I got a '91 L98 with Dual Cat setup.
Looking for Headers with AIR that will fit the Dual Cat exhaust system!
I found the SLP ones but sadly they do not produce them anymore :-(
I cannot remove the AIR (law here in Switzerland) and I want to keep the Dual Cats.
Are there any Headers that would "bolt-in" to my car?
Manufacturer and Part Numbers would help me sort things out!
thanks you!
Member
Joined: Oct 2006
Posts: 329
Likes: 0
From: Surprise,AZ
Car: 91 rs
Engine: 305tbi
Transmission: 700r4
Axle/Gears: 3.27 9bolt
Re: Headers, A.I.R. and Dual Cats
hedman headers. in jegs magazine. like $364 with y pipe. or buy any headers and weld air tubes to them, hedman makes a kit
Thread Starter
Junior Member
iTrader: (1)
Joined: Jun 2007
Posts: 83
Likes: 4
From: Switzerland, Europe
Car: 91 Z28
Engine: TPI 350
Transmission: T5
Re: Headers, A.I.R. and Dual Cats
ah finally found it on the HEDMAN site, there are two different Y-pipes available.
HEader Part number is
Painted: 68491
HTC: 66491
Any other manufacturers than Hooker?
Im really sad about the SLP headers discontinued...they looked awesome!!!
HEader Part number is
Painted: 68491
HTC: 66491
Any other manufacturers than Hooker?
Im really sad about the SLP headers discontinued...they looked awesome!!!
Joined: Apr 2006
Posts: 1,534
Likes: 3
From: Jacksonville, NC
Car: 92 Camaro
Engine: Dart SHP 406 HSR, LE heads
Transmission: Performabuilt Level 2, Vig 3200
Axle/Gears: S60 373
Re: Headers, A.I.R. and Dual Cats
edelbrock requires welding but they fit
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Thread Starter
Junior Member
iTrader: (1)
Joined: Jun 2007
Posts: 83
Likes: 4
From: Switzerland, Europe
Car: 91 Z28
Engine: TPI 350
Transmission: T5
Re: Headers, A.I.R. and Dual Cats
thanks for the replies!
I think I will hunt down a pair of SLP 1 3/4" headers with AIR.
think they could be a good match for a mild 350
I think I will hunt down a pair of SLP 1 3/4" headers with AIR.
think they could be a good match for a mild 350
Joined: Mar 2000
Posts: 5,703
Likes: 132
From: Orange, CA
Car: '90 Trans Am-12.45@110.71
Engine: 355 w/AFR 195's Elem. 400/430 HP/TQ
Transmission: Tremec T-56
Axle/Gears: 12 Bolt 3.73
Re: Headers, A.I.R. and Dual Cats
Here is what you need:
Joined: Mar 2000
Posts: 5,703
Likes: 132
From: Orange, CA
Car: '90 Trans Am-12.45@110.71
Engine: 355 w/AFR 195's Elem. 400/430 HP/TQ
Transmission: Tremec T-56
Axle/Gears: 12 Bolt 3.73
Senior Member
iTrader: (1)
Joined: Sep 2007
Posts: 914
Likes: 1
From: New Philadelphia/ Canton OH
Car: 1991 RS, 84 El Camino conquista RIP
Engine: 5.0 (for now)
Transmission: 4L60
Axle/Gears: 2.xx torsen limited slip & 3.42 ope
Re: Headers, A.I.R. and Dual Cats
that's a custom setup right?
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