EE2-4.5NKX is a World Products engine block, designed for use with racing engines. The block is made of cast iron and features a 90 degree V-angle design. The cylinder bores are 4.500 inches with a 7.450 inch deck height and 9.850 inch center-to-center spacing. It comes equipped with a 9.800 inch main journal size and 7/16” cap screws. It also features aluminum main caps, 1045 steel iron cross-shaped tie bars, wet iron sleeves, and 13/16” head bolts. It has splayed four-bolt main caps, which increase strength and rigidity while ensuring a secure fit and sealing. The engine block is compatible with a variety of engine components, including camshafts, crankshafts, EFI kits, and oil pans.