This price is Per-Head, you must buy both.. These old Thick heavy Heads were generally used trucks and Performance 5.0L Camaro. If you use them on a 5.7L 350 they can make great Low end Torque and they could handle the heat from Snow plow Trucks or light duty Farm work vehicles . They are very thick and these heads can handle the heat with out cracking.. The entire casting number is 378450 and were originally for 1978 to 1981 Chevrolet 305 5.0 engines (of course they will fit 1955 through 1999 Chevrolet small Block Engines ). These have low hours on them and just need a gasket cleaning and bolt them on.. These have the 60cc chamber size, and the larger 1.84" size intake valve.. No cores needed. these are the outright price. call (952)854-5 seven eight six