Power advantage between Ford 351, Mopar 340 and Chevy 350??

Post #128 & others who love Hemis.
Did you know these facts?
[1] Development started in July 63, with The Feb 64 Daytona planned as the debut race. That is a veeeeeeery short time frame to develop an engine to win a gruelling 500 mile race...
[2] Not only did the Hemi finish it's inaugural race, but it won the first for places
[3] In testing, the engines were cracking bores. The problem was traced to core shift. New blocks were hurriedly cast. The engine that came first had a block that was cast just 13 days before the race!
[4] The track engine was making about 550 hp, big for 1964. A FI version made about 650 hp.
[5] A 1964 magazine had this banner headline: ''Chrysler engineers unveil a set of heads that will out breath anything ever put on an American engine before'.