Complex sentence: While the long block remained the same as the Type 1, the engine cooling was redesigned specifically to reduce the height of the engine profile--earning the nicknames of "Pancake" or "Suitcase" engine and enabling increased cargo volume.
Split into simpler sentences: While the long block remained the same as the Type 1, the engine cooling was redesigned specifically to provide a minimal engine profile. The resulting "Pancake" or "Suitcase" engine enabled an increased cargo volume.