LT4 exhaust recirculation?
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Registered User
Joined: Jun 1999
Posts: 196
From: Erie, PA, USA
LT4 exhaust recirculation?
The LT4 did not use an EGR valve for emissions, but still retains the tube from the exhaust to the back of the intake.
What is it for?
Any problem with deleting it for a track only car?
What is it for?
Any problem with deleting it for a track only car?
Administrator
Joined: Nov 1998
Posts: 71,094
From: Hell was full so they sent me to NJ
The LT4 intake manifold has all the provisions for EGR, including the mount for the EGR valve, and the connection for the exhaust gas riser tube from the passenger side exhaust manifold. Get plates/gaskets to block both those openings off. Technically, all you need to block is the one for the EGR valve hole, but blocking both of them sort of provides two methods of preventing a vacuum leak. Try sjmmanufacturing.com for the blocking plates.
Registered User
Joined: Aug 2007
Posts: 137
From: www.rdspeed.com
We sell the EGR block-off plates for a very reasonable price. 
http://www.rdspeed.com/product.sc?ca...=4&productId=1
http://www.rdspeed.com/product.sc?ca...=4&productId=1
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