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I hand port and gasket match stock crossfire intake manifolds, this adds up to 22 horsepower. It also improves your top end rpm capability. The stock manifold is well known for being extremely restricted. However this can be corrected by removing all the factory restrictions. You will notice the difference over stock. I currently have 1 left in stock.
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$400 plus shipping. I also leave the EGR system intact where others don’t because I feel it’s necessary and has a minimal effect on flow and gained horsepower. I shorten the runners and tune their lengths, some others don’t do that either.
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in Forum: C3 Special Edition Vettes
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