[TCSGTO]

Originally Posted by 25stevem

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!

Yes, they are at the boundary layer and don’t really “ram” anything. I kept the open scoops but ditched the pan when the car started getting well into the 11’s. Up till then it did seem to help a little on the street on hot days but you cool your engine down between passes anyway at the track.The scoops got to be a restriction at higher power levels.
FWIW keeping the fuel cool is probably worth more power than cooling the air. Cool fuel pulls more heat out of the intake tract than air. The old 1% increase in HP per 10 degree temp drop rule of thumb has been disproven many times. There is an improvement but not that much.