This video ranks five of the greatest V8 engines from the golden era of American muscle cars, opening with a key distinction: the 426 Street Hemi’s factory-warrantied 10.25:1 compression versus its race-only cousin. One commenter adds real-world proof of the era’s staying power — a 1970 Mustang Mach I he’s owned since 1977, now making 425 horsepower after a 351 Cleveland rebuild. See which five engines made the list.