What are these?
Thread Starter
Junior Member
Joined: Jul 2024
Posts: 72
Likes: 1
From: Kentucky
Car: 1986 iroc z
Engine: 305 tpi 5.0L v8 F Vin
Transmission: 700r4
Axle/Gears: Stock?
What are these?
Hey all, I just had a question about these pipes coming off of exhaust manifolds. Never found out what they do, i dont have them on my manifolds and it always keeps me wondering
Joined: Oct 2020
Posts: 1,460
Likes: 712
From: Franklin, KY near Beech Bend Raceway, Corvette Plant and Museum.
Car: 1992 Pontiac Firebird
Engine: 5.0L L03 TBI
Transmission: 700R4
Axle/Gears: 2.73
Re: What are these?
Those are the things that make you hate life while you are changing your sparkplugs.
Senior Member
Joined: Oct 2021
Posts: 737
Likes: 116
From: Windsor, On
Car: 1984 Trans AM
Engine: 305
Transmission: 700-4r
Axle/Gears: 3.23
Re: What are these?
remove the pipes & keep them + recirc pump. Another buyer of your car in a state that requires all the pollution factory installed equipment be present. plug the holes
Member
Joined: May 2009
Posts: 227
Likes: 55
From: wisconsin
Car: 1991 camaro convertible
Engine: LS3
Transmission: 6l80
Axle/Gears: Ford 8.8 3.31 torsen t2r
Re: What are these?
The air injection tubes are part of the emission control system . The air pump was belt driven along with all of the other belt driven accessories {alternator power steering ,ect.} , The air pump could force air through the manifolds , the catalytic converter or both to reduce emissions
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