24 Valve GMC: Diesel Conversion Specialists Shows Us the Way

Pulling up beside a truck at a red light, many of us true gearheads can tell you what engine is in it by the way it sounds. A 24-valve Cummins swap in a K2500 is bound to confuse and impress those in the know.Pulling up beside a truck at a red light, many of us true gearheads can tell you what engine is in it by the way it sounds. A 24-valve Cummins swap in a K2500 is bound to confuse and impress those in the know.