Throttle bodies
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From: Winter Springs, FL
Car: 2000 Z28
Engine: LS1
Transmission: T-56
Axle/Gears: 10 bolt 4.10s
Throttle bodies
Ok, got a question for you. I bought a TPI setup from a guy that had it on his Corvette and I noticed that on my original tb I have an extra vacuum port and was wondering what it is..Thanks.

This first one is off of my original TPI out of an 88 IROC. I'm wondering what the middle inlet is.

This is out of the vette. It doesn't have that middle inlet.
Could I just drill it out and tap it and put a nipple in it? Will that work ok?

This first one is off of my original TPI out of an 88 IROC. I'm wondering what the middle inlet is.

This is out of the vette. It doesn't have that middle inlet.
Could I just drill it out and tap it and put a nipple in it? Will that work ok?
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Joined: Aug 2004
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From: colorado
Car: 1992 Trans/am convertible
Engine: 305 TPI
Transmission: 700r4
Axle/Gears: 2.73 drum WS6
Re: Throttle bodies
It looks like either the EVAP line, the one that comes from the charcoal canister. Did you check to see that the other side might have an extra line???
Thread Starter
Member
iTrader: (2)
Joined: Jul 2007
Posts: 231
Likes: 0
From: Winter Springs, FL
Car: 2000 Z28
Engine: LS1
Transmission: T-56
Axle/Gears: 10 bolt 4.10s
Re: Throttle bodies
Yeah, you're right. It is the EVAP line. And no, there is nothing on the other side. Thanks.
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