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You'll notice that the intake plenum is backwards on this motor. Or, is the engine backwards on the intake plenum? At any rate, swapping the intake plenum end to end is about the biggest change from this motor to the one found in your Corvette. While the headers look wonderful, they aren't even close to being optimized for this engine. If GM put a better set of headers on the car, the Grand Am tech people would simply find another way to restrict the power output. This is racing in the world of restrictions. Or, as others point out, it's sports car racing in the world of NASCAR. Whatever, it's working. View Related Article
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