Add Yahoo as a preferred source to see more of our stories on Google. There's a reason why gearheads put both LS (not to be confused with LT) and Vortec engines under the same umbrella of "LS", ...

The LM7 engine, found in Chevy Tahoes and Cadillac Escalades, can be transformed into a high-performance powerhouse capable of reaching over 1,000 hp.

Its roots can be traced way back to the '50s.