G.M needed a bigger engine with more power. The gear train was to light for the valve train load, this was common for some 6V53's. An aluminum 471T should give you good power and a reasonable weight engine. Others have stated the additional height will make the install a bit tougher than the 453T. The 6V53/6V53T will give you the maxim power, but like you said, a bit heavy. The two stroke is just too hard to bring into compliance with modern emission A two-stroke design, with its excellent weight to horsepower ratio, would allow power users to offer the safety and ruggedness of a diesel, where.

The two stroke Detroit Diesel is no longer in commercial production.