Oil "Use" Ford 427/535 Crate

[tortuga]

Originally Posted by blykins

It depends on the head and how deep the rocker arm stud holes have been drilled/tapped. On a lot of heads, yes, the hole goes into the intake port.

Anyone seen this occur with the Z304DA's?

[tortuga]

Originally Posted by tortuga

Anyone seen this occur with the Z304DA's?

Again before I start tearing into it with potentially no reason, does ford typically make these heads with rocker stud holes that go clear through to the ports? These are somewhat production heads, all made and machined pretty much the same way I would think?

Thanks
Steve H