https://www.enginelabs.com/engine-tech/engine/inside-the-evolution-and-tech-of-5-plus-inch-bore-space-engines/With larger blocks comes the need for larger cranks, pistons, cylinder heads, intake manifolds, rocker assemblies, and other components.This season, Mike Janis debuted a 5.300" bore space Hemi based supercharged powerplant developed by Alan Johnson Performance Engineering that could likely revolutionize outlaw doorslammer racing.This article is ten years old, Sonny Leonard died last year, and one can check what did or did not happen since then.