81 Exhaust Question...
Thread Starter
Melting Slicks
Joined: Feb 1999
Posts: 2,473
Likes: 10
From: New Paltz, New York USA
81 Exhaust Question...
The Y-pipe that comes off the exhaust manifold on my 81 has a smaller size restriction in it where the O2 sensor goes. Is this normal for all 81's? I have installed a new crate motor and have eliminated the computer and all smog stuff. I would like to know if there is a Y-pipe that I can buy that will fit and has no restriction? TIA
Le Mans Master
Joined: Jul 2000
Posts: 6,664
Likes: 162
From: columbia city in
I would look into a 82 vettes front pipe http://www.parts123.com/parts123/yb....5Z50000050G~~~ it looks different .maybe only because of the overdrive trany .compare the two and see if it will do what you want.
Last edited by terry82; Dec 8, 2013 at 03:53 PM.
Race Director
Joined: Jan 2002
Posts: 11,615
Likes: 350
From: No Where USA
The Y-pipe that comes off the exhaust manifold on my 81 has a smaller size restriction in it where the O2 sensor goes. Is this normal for all 81's? I have installed a new crate motor and have eliminated the computer and all smog stuff. I would like to know if there is a Y-pipe that I can buy that will fit and has no restriction? TIA
Buy the dual exhaust from corvette central. It runs down the passenger side. You can just hook it into your mufflers if you don't want to change them.
Le Mans Master
Joined: Jan 2006
Posts: 9,192
Likes: 27
From: Boca Raton Florida
No reason to screw around with a Y-Pipe if your deleting the smog stuff. The AIR pump pushes fresh air into the exhaust stream to keep the cat hot. Are you putting in a bypass pipe? Rather than all that I would go to a true dual system
5th Gear
Joined: Nov 2013
Posts: 5
Likes: 0
From: Falcon Colorado
I'm a first time corvette owner. I have the engine out and I' m getting it rebuilt . My question is . If headers are purchased ( bought to fit a 1981 ). can they be assembled first then lowered in, already installed ?
Thread Starter
Melting Slicks
Joined: Feb 1999
Posts: 2,473
Likes: 10
From: New Paltz, New York USA
I would look into a 82 vettes front pipe http://www.parts123.com/parts123/yb....5Z50000050G~~~ it looks different .maybe only because of the overdrive trany .compare the two and see if it will do what you want.
Thanks, that is just what I am looking for.
