F fordtorino68 Guest Mar 17, 2009 #1 i have a 66 chevy el camino with the original 327.how would i know if i have double hump heads and what do these heads do compared to normal ones?thanks
i have a 66 chevy el camino with the original 327.how would i know if i have double hump heads and what do these heads do compared to normal ones?thanks