?Which of the following is/are true about cylinder head porting?
A. ?Porting is usually helpful for street car performance.
B. ?Most factory ports flow 40% more air than can flow through the valve opening.
C. ?Larger ports can keep air flowing at a higher velocity.
D. With smaller ports at lower rpm, fuel tends to fall out of the air-fuel mixture.
E. All of the above
Answer: B
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A) adjusting B) limiting C) ?binding D) supporting
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