Its aluminum cylinder heads feature 68cc ... a more aggressive camshaft compared to the LS376 crate engines. Supercharged ...

In its history, General Motors has put some powerful LS engines under the hood of its most popular models. Here are the top ones and their specs.

While the Chevy big block largely disappeared from production ... Mounted to the block are a pair of BluePrint Engines LS3 aluminum cylinder heads with 69cc combustion chambers.