Are KA24DE and KA24E same engine block?

The KA24DE and KA24E are not the same engine block, though they share some similarities. The KA24E is a single overhead cam (SOHC) engine, while the KA24DE is a dual overhead cam (DOHC) engine. Both engines have a similar displacement of 2.4 liters and are part of Nissan's KA family, but the design differences in their camshafts and other components lead to variations in performance and characteristics.