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Old 06-13-2010, 06:09 PM   #16
CFD


 
Drives: 2SS/RS L99 BLACK
Join Date: Apr 2010
Location: Franklin , MA
Posts: 6,696
The idea of ram air, back in its day was quite effective, but not in the way it implies. The early big block cars from the factory were feeding air through a 12" long snorkel with a 1 1/2" openning, adding any free flowing filter arangement had great bennefits in itself. Also keep in mind ram air was designed in the day of normally aspirated engines, an increase in air velocity does affect the the way a carburetor performs differently than it does fuel injection. In the case of Harley's longer intake tracks produce more power in general and "ram air" via velocity stacks etc. inreases air velocity, this along with the scavenging effect created by exhaust gases when the valves are in the overlap position produces significant hp gains, again on carburetored engines. With all that said the the early muscle car years with large hood scoops,cowl induction and ram air will always be what we think of when it comes to performance, it's in our blood, I'll even go as far as saying our kids will be putting scoops on their electric cars.
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