81 Exhaust Question...
12-08-2013, 03:29 PM
#1
Melting Slicks
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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
12-08-2013, 03:50 PM
#2
Le Mans Master
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; 12-08-2013 at 03:53 PM.
12-08-2013, 05:05 PM
#3
Race Director
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.
12-08-2013, 05:29 PM
#4
Le Mans Master
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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
12-08-2013, 07:01 PM
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5th Gear
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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 ?
12-08-2013, 09:43 PM
#7
Melting Slicks
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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.
