Engines with a hi velocity (smaller ports and inline valves) are easier to make great street usable power- the 440 and the Buick Olds and Pontiac 455s. The Hi volume head motors definitely need to tap into their hi flow high RPM capability afforded them by their BIG ports and valves- the Hemi being the king here with the BBC and 351 4V Cleveland down the list from the Hemi. To own a 426 hemi powered car that runs 12s 13s 14s is simply not even touching where a Hemi shines. But a Hemi car regardless of ET is cool.