When we left Project Groundhog at the end ofPART 1, we had just finished assembling the short-block. To briefly sum up the scope of the build, we started with a down-in-the-dirt (literally) Gen III ...

As you all know, we picked up our project engine from Dave's Goldenwest Truck wrecking yard. With a surplus of these engines at their disposal, they had what we needed at the right price. After the ...

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 ...

GM's 5.3-liter Vortec doesn't have the LS' performance reputation, but it's a capable small-block V8 all the same, as its ...

Corvette enthusiasts are… well, polarizing. Some appreciate all things Corvette, but others tend to question an engine swap rather than giving the owner the thumbs up for the effort that went into the ...

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, ...

The LS and Vortec engines are well-known to be under the hood of GM models, but there are key differences between them. Here's what you need to know.