The LS7 big-block was never installed in factory cars, but it was offered as a crate motor from 1970 till late 1980s, it made over 520 hp and around 600 lb-ft ...
lthough it's built on the same Gen III/Gen IV architecture as the current LS1 and LS2 engines, the 7.0-liter LS7 that comes as standard equipment in the '06 Corvette Z06 can't really be compared with ...