This engine modification package is designed to increase the cubic inch displacement of a Ford small block engine, typically a 302 or 351 Windsor. It achieves this through a longer stroke crankshaft, matched pistons, and connecting rods. For example, utilizing this approach with a 302 block results in a significant increase in displacement.
The importance of such a modification lies in the resultant power increase. The longer stroke creates greater leverage on the crankshaft, leading to enhanced torque, especially at lower RPMs. This translates to improved acceleration and overall engine performance. Historically, this approach to engine building has been popular among enthusiasts seeking more power from their existing engine platforms without significant alterations to the engine bay.