Original 1966 through 1967 Chevrolet small block camel hump heads in used condition. GM part #3890462 with dates of F*10*6 and A*10*7. Correct for 1966 1967 Camaro, Chevelle, Corvette, Chevy II and passenger cars with the 327 engine. Heads include the valves but no springs or rocker arms. These heads are in decent overall shape. $350 for the pair or $200 a piece. Will ship!