Gm Took a chance with the LS engine. They stayed true to the pushrod small-block and continued to push the technology to a the point that building a daily-driven, 500-plus horsepower car is no big deal. The GM Performance Parts LS Series cylinder blocks are designed specifically for late model small-block engines that run the LS Family cylinder heads. These include the LS1, LS2, LS4, LS6, LS7, LQ4, LQ9, and L76. Our LS block selection ranges from a stock replacement all the way up to our C5R racing block designed to support over 900 horsepower!

Click here for a handy chart that will help choose the right LS block for you!