Put your reputation on the block with Ford Racing FR9 NASCAR blocks! These bare cylinder blocks offer builders a great foundation to build their dream powerplant dedicated to racing. Approved for NASCAR Sprint Cup Series and Circle Track competition, Ford FR9 cylinder blocks are lightweight, compacted graphite iron castings built with 4-bolt steel main caps. They feature front engine plate mounting, crossflow cooling, special in-block oil feeding passages, a cast-in camshaft tunnel, and inner and outer piston squirter provisions. Cast-in water passages route coolant directly to each cylinder for improved cooling--and that's big in racing! Why not build with redesigned Ford Racing FR9 NASCAR cylinder blocks crafted for horsepower and easier track maintenance' It's your reputation! Builder Notes: Semi-finished cylinder bores, main bearing bores and lifter bores - must be honed to final size; The FR9 engine is unique and does not share any components with previous 351 Windsor or Cleveland based engines. Required Components: Cylinder head: M-6049-E1; Water manifold: M-8C368-FR9; Water pump assy: M-8051-FR9. WARNING: This part is designed and intended for competition use only. It should not be installed on a vehicle that is driven on public roads and highways. Installation of this art on a vehicle driven on public roads and highways is likely to violate U.S. and Canadian laws and regulations relating to motor vehicle emissions.