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Achieving top speeds with piston engines is almost all about aero.  Yes, thrust is key to get you above 100-mph.  And stability is critical for being able to comfortably reach 150-mph over the flat, but actually pretty choppy, salt flats of Bonneville.  Anything over 200-mph takes a seriously slippery shape.  The drag forces rise to exponentially with each extra MPH at that point.  You really need to be in as slippery a shape as possible. During the post-war maverick days of the late 1940s and 1950s, the engineers involved had to find the most sleek, ultra teardrop shape imaginable. Military …

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