Be careful when purchasing new plastic lifter guides for GM’s LS engines. It’s always a smart practice to replace the lifter guides when rebuilding an older LS engine as the material can become weak ...

For the past two months, we've taken readers on a detailed ride through a full-on LS1 engine assembly. In Part 1 of this homegrown motor build series ("My First Stroker," Aug. 2006), we prepped our ...