Ford DOHC Indy Racing Engines. Naturally aspired at 400+ HP each and hugely expensive. They were available from 1962 and through the 70's as a Foyt. I wonder if it is competitive and cost effective to be used as drag car engines.
The Miller/Offenhauser Marine V16 engine...in Miss America
Lincoln V-12 flathead
Uber Rare 455 DOHC Olds Street Hemi W-43 Performance Package - CovalentNews.com
Super Rare Chevrolet Camaro Z28 302 CID engine with Hemi Heads, Cross-ram intake and w/ Dual Quads developed by famed NASCAR designer Smokey Yunick.
Hudson Hornet 7X racing engine. Flat Head dual Carbs...
Ed Wood's 12 cylinder 1,710 cid Allison powered '64 Chevy Malibu
A truly amazing straight 6 engine for the Eagle Speedster (a tribute to the Jaguar E-Type) amazing
Rare Chevrolet 1963 Z11 engine.