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Originally Posted by 767Jockey
I was always of the impression that purpose of the Turkey Pan wasn't to necessarily build a ram air effect, but rather to isolate the carb from the heat of the engine compartment and essentially build it it's own chamber to feed it cooler denser outside air.
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Jockey: This is my impression as well. The turkey pan is more to keep the hot air from the engine away from the carb, than it is to draw cool air into it. Personally, I've always thought the engine breathes better with the pan off, which is why I run without it most of the time.
I had a a 69 Z-28 DZ302 and a 70 LS-6 Chevelle, both with true "Ram Air". -The set-up and scoop on the Cobra is not even close to being "functional", IMO. -Even with a little "rubber" around the top of the pan.
Eric @ Performance Engineering ran dyno tests with and without a turkey pan installed. He told me the pan usually dropped about 20hp from the engine (on average). Sure, when you're running over 500hp you probably won't notice a 20hp loss..........but what the heck.
-I can't tell you if he had a fan blowing on the front of the car though!