LT1's have EGR????

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Feb 7, 2007 | 07:46 PM

garkahn90

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From: Davison Michigan

LT1's have EGR????

I was going to put LT1 exhaust manifolds on my L98 along with the rest of the LT exhaust system. But, it looks like the L98 EGR is piped off the passenger side exhaust manifold and I don't see any fitting on the LT1 manifold I have.

Feb 7, 2007 | 08:09 PM

zr1fred

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From: Phoenix Arizona

You may be able to adapt the pass. side AIR tube to work as an EGR source. Actually the AIR doesn't do that much, but the EGR is pretty important for emissions and driveability.

Feb 7, 2007 | 08:13 PM

garkahn90

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From: Davison Michigan

I was looking at that as a possibility. I will probably be taking off the air system anyway. But, I don't think it would be an easy plumbing job to go from the air fitting to the egr manifold inlet. That is all hard piped.
Anyway sounds like the answer to my question is no EGR on LT1's?

Feb 7, 2007 | 08:18 PM

Benny42

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From: Magnolia Tx

LT4's don't have EGR, LT1's do. Those manifolds came from a '96 6-speed.

Feb 7, 2007 | 08:23 PM

STL94LT1

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From: O'Fallon Missouri

Quote:

Originally Posted by Benny42

Those manifolds came from a '96 6-speed.

There is no difference in the LT4 and LT1 exhaust manifolds. Although the LT4 doesn't have an EGR, it has the same AIR system as the LT1.

Feb 7, 2007 | 08:29 PM

Benny42

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From: Magnolia Tx

Ok. Which LTx manifolds don't have egr?

Feb 7, 2007 | 08:36 PM

STL94LT1

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Quote:

Originally Posted by Benny42

Ok. Which LTx manifolds don't have egr?

All LTx exhaust manifolds have air fittings. The LT1 also uses the air fittings for the EGR.

Feb 7, 2007 | 08:39 PM

Benny42

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From: Magnolia Tx

Thanks for the info. benny

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Feb 7, 2007 | 09:49 PM

Road Agent

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Quote:

Originally Posted by STL94LT1

All LTx exhaust manifolds have air fittings. The LT1 also uses the air fittings for the EGR.

What?

Feb 8, 2007 | 06:05 AM

#10

garkahn90

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From: Davison Michigan

So, now it sounds like the answer to the question is yes, the LTx's do have EGR. But, they do not have a unique port in the exhaust manifold, instead they share the same plumbing as the air system?

Feb 8, 2007 | 09:13 AM

#11

zr1fred

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From: Phoenix Arizona

Quote:

Originally Posted by garkahn90

So, now it sounds like the answer to the question is yes, the LTx's do have EGR. But, they do not have a unique port in the exhaust manifold, instead they share the same plumbing as the air system?

Yes