The scoops on the 68 to 70 hoods and even the 65 to 67 hoods do not provide a pressure gain above atmospheric that’s worth even talking about if my two cents is worth anything!
Its more informative to look at temperature drop that they can provide by means of wind chill.
Now the hood scoops on the 71 GTO way at the front of the hood are far better at pressurizing the carb!
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I do stuff for reasons.
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