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 ...

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 ...