#4 – 1970 Pontiac Firebird Formula 400
The Pontiac Firebird is an American automobile built by Pontiac from the 1967 to the 2002 model years. There were two Ram Air 400 cu in engines for 1970: the 335 hp L74 Ram Air III (366 hp in the GTO) and the 345 hp LS1 Ram Air IV (370 hp in the GTO) that were carried over from 1969. The car accelerated from 0 to 60 in 6.4 seconds.