I have a spare 451 engine (bought a complete engine and tranny, salvage, to get the tranny) the engine apparently had overheated and blew the gasket and-or warped the head. I plan to rebuild the engine in order to have a running spare. My question is.....does anybody know what effect a warped head has on the camshafts??? Resurfacing the head should not be a problem, if there was no other damage, but it seems to me that if the head is warped, the bearings for the camshafts would now be out of alignment. Is this misalignment going to be enough to cause a problem? Have seen several people post about refurbishing heads, but don't know if it was just for a valve job or if resurfacing a warped head was involved. If anyone has any information on this situation, I would really appreciate hearing about it.