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

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Old Feb 28, 2010 | 05:14 PM
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1986-z51's Avatar
1986-z51
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From: seabrook tx
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Pulled the plentum off the change the egr valve.There is a large lip or riser in the front bottom of the plentum.What can you due with this???
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Old Feb 28, 2010 | 06:14 PM
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Take an air grinder to it......


This is my old stock plenum after removing the ridge. I also gasket matched the runners to the gaskets and the plenum to the gaskets. It will not yield large HP gains...but it will help air flow. Better than leaving it stock.
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Old Feb 28, 2010 | 06:43 PM
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John's right take a grinder or dremel to it and get rid of it. There are alot of little things that can be done to help these cars run better. Check out www.corvetteplenum.com and look at Mike's works of art. They are sweet and flow real good. He CNC's his. Pipe
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Old Feb 28, 2010 | 07:38 PM
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http://www.austinthirdgen.org/index.php?pid=21
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