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

Header Installation

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Old Sep 5, 2006 | 09:50 PM
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Default Header Installation

I am installing Hedman Hedders on my 85 L98 and have a couple of questions. What am I supposed to do with the air tubes that connected to the stock exhaust manifold. There are no connections on the new headers. Also, I dont see any opening for the O2 sensor. I am sure that these are easy questions, I've just never done this before.

Thanks.
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Old Sep 5, 2006 | 10:01 PM
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You'll have to yank the AIR piping off, and have an O2 bung welded in for the sensor.
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Old Sep 5, 2006 | 10:11 PM
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You should have specified that you wanted headers with the A.I.R. fittings on them. My Hedman Elites came with thise fittings. I didn't weld a bung in my collector because the headers were coated so I put it on the collector cone, works great there. I used a heated O2 sensor.
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Old Sep 6, 2006 | 08:52 AM
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So what is the effect of deleting the AIR system? Will there need to be any chip changes or other modifications I will need to do as a result?
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Old Sep 6, 2006 | 09:13 AM
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There should be no codes thrown if you don't connect the AIR pipes to the headers. There is a pulley and bracket kit that installs in place of the AIR pump so you can use the same serpentine belt.
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Old Sep 6, 2006 | 09:19 AM
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Originally Posted by Drez
So what is the effect of deleting the AIR system? Will there need to be any chip changes or other modifications I will need to do as a result?
Dig through the archives, all will be revealed.

Short answer: no.
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Old Sep 6, 2006 | 09:30 AM
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No codes on my '85 - you don't need the AIR but you will need the O2.
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Old Sep 6, 2006 | 09:52 AM
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So is this what I am looking for for the pump delete? (From Mid America ----$150.00????)



This 1985-91 Air Pump Replacement Pulley Kit has highly polished aluminum brackets and uses grade 8 bolts. Also cleans engine area and, best of all, you can use your original serpentine belt. * For off road & race use, on dual exhaust cars only.
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Old Sep 6, 2006 | 09:59 AM
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yes
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