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Old 11-01-2004, 10:51 PM
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benwantland benwantland is offline
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I put a performer intake on the 360 FE in my friend's ford truck, and the ports on it were way smaller than on the heads (they were huge!). Anyway, there was a paper in the box of the intake saying that the ports on the head were too big, and not to hog out the intake, because the runners were optimally sized to keep velocity up at low speeds on the engine, which makes sense. Granted, there would be a bit of turbulence going from a smaller runner into a larger intake port, but that probably would help fuel atomization anyway.

My point is, the people who make the intakes do think about exactly how they size those runners, so think twice before grinding on 'em.
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