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 ...

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 ...

Now that the LS has burrowed deeply into just about every facet of Chevrolet performance, making power means spinning wrenches and swapping parts. That's where the power theory runs right into ...