[Rick Parker]

Small Block
I found it amazing that a 2.4 liter V8 with double overhead cams, that uses 4 valves per cylinder, spins 18,000-20,000 RPM's, (short 1.566" stroke) is capable of developing over 755 HP and weighs in at only 209 lbs. You gotta love it! This also having to last 2 races or about 800 total miles including qualifying etc.
On a similar note I recall reading a few years ago that an Illmor or Mercedes engine used at the time in Indy cars would fit in a 20" cube, ( I assume this is less items such as exhaust and induction) but you get the point.