I have a set of heads that have been apart for years, they were magnafluxed years ago and we’re fine. I don’t think these ever had a valve job or anything else done. Been sitting in my garage for 18+ years. 250.00 obo located in Berkley, Ma
Its under the valve cover same as the Part # that is cast . You show the part # between the front 2 cylinders . Date code will be between the back 2 cylinders . It will be a Letter and then 2 numbers like D 21 .