The SAE World Congress is a huge conference of very serious businessmen and engineers gathering to exchange ideas and opine on the industry. It's also a place where you can geek-out on hardcore engine pr0n.

The Congress is a mix of press events, technical talks, and vendors large and small hocking their wares, latest innovations and inventions, It's also a great place to see some pretty nice hardware chopped up in cross section with booth professionals who know the difference between a PV diagram and a pirouette. We've listed our top five favorite engine displays at this year's 2009 SAE World Congress. Some are large, some are small, some are conventional and our favorites are really unconventional. Click through each image for a complete gallery, and if it's something novel, an explaination on the inner workings.

5) Lexus IS 350 2GR-FSE V6

4) Dodge Ram 5.7 L HEMI V8

3) Honda Insight 1.3 L i-VTEC and 10 kW Motor

2) Scuderi Split-Stroke Engine

1) Vengeance Power Engine