While the LS5 was the most widely available and made an impressive 390 hp and 500 lb-ft of torque in the 1970 Corvette LS5, the LS6 in the Chevy Chevelle SS was a monster. It made 450 hp and 500 ...

Power shot up to a big-block LS5-matching 360 hp, while torque was boosted from 290 lb-ft to 380 lb-ft. It's a bold claim, as countless muscle cars have been produced with a whole host of engines ...