If you are of a certain age you remember reading that in 1963 (over 50 years ago) Chevrolet had a big block mystery motor for the Daytona 500.
At the time, what we understand today as a big block Chevy intrigued a ton of people, Junior Johnson, and Smokey Yunick were involved with this mystery motor.
It was the engine that would replace the venerable 409.
Watch an epic dyno run of an original over 50 year old Smokey Yunick tweaked mystery motor. Notice the simplicity, the timing light, the age of the guys around the engine.