GM LS7

Anyone can slap a supercharger on a stock 505-horse LS7 and pick up an extra 200 horsepower. And thanks to the incredible untapped potential of GM’s factory LS7 cylinder heads, gaining huge chunks of horsepower through natural aspiration is fairly easy, too. All it takes is some head work, long-tube headers, and a big hydraulic roller cam. However,

[portfolio_slideshow id=37343] As the powerplant of choice for the 2006-2013 Corvette Z06 and 2014-2015 Camaro Z/28, GM’s LS7 is a 427-cubic-inch, 500-plus horsepower monster. It was the first production engine to use forged titanium connecting rods and titanium intake valves, and the only production V8 built by GM with fully CNC’d heads and a 7,100