Old hat...

As far as all the pressure issues, I am aware such matters DO matter. Admittedly, I am relying on the scoop manufacturer to not have been lying to me about it.

An aside: I do know the pressure differential changes at higher speeds. I know that from a few years of taking the car to the local strip. It took me awhile to figure out why I had fuel dumping out of the bowl vents onto the windshield.

They told me the scoop stopped working backwards at a certain speed. They were jolly-well right-o about that part!

I don't have temperature control problems without severe environmental input. If it's over 100º outside, I don't want to be in stop and go traffic....not that there is a lot of that around here. The engine keeps 180º most of the time. It might nudge 200º from time to time, but it's not a performance limiting problem. My headers are coated, thermal on the inside, powder on the outside. Headers, being a common culprit of too much heat in an engine compartment are not a problem in this car.

Another aside, but it's a relatively new (same age as this engine..2000 or so) 3-row brass radiator in the car; scale-free.

If this engine has more than 2000 miles on it, I'd be surprised. It has sat. A lot. It's only recently I figured I might as well drive it as try to 'save' it. I'll die before it does, most likely.

I have a velocity stack on the car. That puts carb breathing easily into where I 'see' air going through the scoop hole.

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