Chevy's fourth-generation LS7 7.0L small-block, one of GM's most powerful engines, upped the ante with 427 cubic inches derived by using a longer 4.0-inch crankshaft stroke with the same 4.125 ...

The mill also packs a forged steel crankshaft and high-silicon aluminum pistons inside of a cast iron block. Chevy is offering the engine in two versions depending on what the builder needs.

This kit has the components necessary for converting your 350-cubic inch SBC into a 383 stroker engine, including a 3.75-inch stroke cast-iron crankshaft (forged-steel crankshafts are available ...