Glory Days of GM Factory Race Car

[Lee Stewart]

Return of the DOHC 426 HEMI

In 1964, the horsepower wars were in full swing. Chrysler Corporation had thrown down the gauntlet most recently with a 1-2-3 sweep at the Daytona 500. Not to be outdone, Ford built their "90 Day Wonder" the now famous 427 SOHC engine. Chrysler got wind of what they were doing, and basically the line of thinking was, why not have two camshafts in the head. It would get rid of a lot of expensive pieces. So, they went into development of the A-925 Hemi prototype aka DOHC Hemi.

https://www.motortrend.com/how-to/return-dohc-426-hemi/