Re: head bolt question
Okay on my 258 which according to the engine serial # is an 81, I know for a fact it has 7/16" head bolts but know nothing about It's history. The bolts doen the intake side of the head are as fallows: stud, stud, stud, bolt, bolt, stud, bolt. The front 2 studs are used to hold and aluminum braket that holds a ideler for a stock AC system. The other 2 studs are not used on my engine and I am not sure of the purpose.