let me first say thanks for your help.what i have is a 250 i had rebuilt.the engine that i have came from 2 different 250s.the guy who rebuilt it couldnt remember what head and what block he used for what.
ok i took the valve cover off and found the head #s.the engine is on a stand going to be put in next friday.this is how the i.d.#s look on the block.3 94257.there is a space between the first # and the second.
ok back to the head.im going to need spark plugs for the engine.last night i went to auto zone to get some,well not know what year the head is i told them two different years to see if they are the same.no.i told them a 66 250 and then a 71 250.what year do i really need or what part #.my friend said if i dont get the correct ones i could mess up the pistons.i dont need that since i just had it rebuilt.
