cast iron 455 buick, 510 ft lbs @ 2800, Over 400 horses @ 4600rpm, and the best thing, it only weighed 610 lbs in cast iron side trim! With what they have out today, you can knock 60-70 lbs by swapping on alum heads and 35bs with an alum intake. 502 i believe is close to 800lbs.
Theres a guy on a buick forum that bought a chevy with a 502 and hes getting 6mpg empty lol. Not bad huh.
