GM's LS engine is a powerhouse, thanks to great-flowing heads that enable tremendous horsepower and high-rpm performance. But while the LS is becoming a more popular swap choice for earlier, pre-C5 ...

If you know a few pieces of information, you can turn a Vortech 5.3L block into an LS mill making way over 500 hp and out-displacing an LS3! To prove it we dyno one at Westech Performance.

There seems to be no upper limit to the capability of GM's versatile LS V-8 small-block engine family, both in terms of horsepower output and displacement. Throughout the 1960s, the distinction ...