[QUOTE=JoeSacamano]Before you go looking for a roller, you may want to check the casting # on the block (it's above the starter). Some of the old blocks with casting starting with "c" are from the 1960s and have a high iron content and good castings. allows! [QUOTE]

Actually it is supposed to be high nickel content and it was at least thru '69, and others say thru '73. Good Ford sources have said that is a bunch of hooey - but I am still saving my early 351's JIC everyone else was right. I still like a roller blocks best tho - they had all the improvements in metallurgy and OEM performance potential.