A 1972 Corvette build sheet shows a horsepower number for the LS5 454 that looks like a nosedive next to earlier years, and the reason has more to do with how Detroit measured power than with what the engine actually made. This numbers-matching, Bryar Blue example with a Muncie four-speed and original Rally Wheels sits right at that turning point, and an LS6 cam and intake swap wakes it up further. Read on to find out what really happened to the horsepower wars in 1972.