Turbos and superchargers have made extra power almost easy to come by. Thanks to them, even tiny four-cylinders can make the type of numbers that used to be reserved for big-displacement engines. That ...

Among the advantages of these engines are factory aluminum heads, lightweight composite intakes and in some cases aluminum blocks. Many, such as the 5.3L (RPO LM7) have a cast-iron block with aluminum ...

With the variety and interchangeability of LS parts, almost no two LS "crate" engines will end up alike and that makes them virtually indistinguishable from scratch-built engines. Let's check out 10 ...

When does "just a little bit more" become too much of a good thing? The answer is that it occurs a lot sooner than most hot-rodders think. We're not sure when it happened, but at some point an engine ...

While the 5.3L LS4 V8 was the first car engine to feature Active Fuel Management (cylinder deactivation) technology, it was not Flex Fuel capable and did not have variable valve timing. As mentioned, ...

In previous issues we talked about the GM 5.3 engines and how they are abundantly available. Recently, we have been hearing more talk about the smaller version of the LS family known as the 4.8. Now ...

Although Vortec engines fall under the "LS" branding, they aren't actually the exact same as more traditional LS engines made by General Motors.