Does anyone know where I canfind a skematic or a diagam of the rocker arm assm. for a 1957 , 235 that is going into a '51 3100? The friend that is rebuilding it says he thinke something is missing in the center of the assm. where the two rods fit together, not the part that holds the two rods together , which is also part of the oiling system, but the parts on each side of this. Any help would be greatly appreciated , especially a diagram. Thankyou
