C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

EGR Question

Old Sep 17, 2010 | 10:06 PM
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I put a 383 in my 87. I have evert thing on except the egr tube for the cat. I don't know where it goes please help.
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Old Sep 17, 2010 | 10:51 PM
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On my 86, it connects to the exhaust manifold on top near the back. Congrats on the 383.
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Old Sep 17, 2010 | 11:54 PM
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thanks but I was talking about the tube that coming from the cat. My mistake sould have been more clear.
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Old Sep 18, 2010 | 09:52 AM
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Originally Posted by BAMNCO
thanks but I was talking about the tube that coming from the cat. My mistake sould have been more clear.
Dude, That's AIR not EGR! Did you keep the AIR Pump and Valves? If so, the AIR Pump feeds the first valve that ports under ECM control to the second valve or overboard to the little muffler tube. The second valve ports, again under ECM control, to the Exhaust Manifolds or the CAT. So the CAT tube should connect to the open port on the second AIR Valve.
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