I pulled my cylinder head the other day, routine valve job, 4 of the head bolts have washers, 11 are shouldered. They look pretty much the same otherwise.
What is the actual difference between the Late F and the 2F head bolts? Why are they different? Is the difference in the blocks or in the heads?
What is the actual difference between the Late F and the 2F head bolts? Why are they different? Is the difference in the blocks or in the heads?