Intake manifold wont fit!

[Linus Tremaine]

I have a 68 IIA that I am intalling a new engine in. I have the original intake manifold from my 7.1:1 head and a pierce intake manifold. I am trying to install either of these onto my new engine with a milled 8.1:1 head. It apprears that the ports line up and all the mounting holes line up, but when I slide the manifold on to the studs the alignment pins in the head do not line up with the associated hole in the intake manifold. They hit the flat surface of the manifold just below the holes. Everything appears fine otherwise. What am I missing? This problem happens with the new pierce manifold as well.

[Les Parker]

Inlet manifold

Hi, What is the engine type that you are fitting? Is it a 3 bearing or 5 bearing engine?
Please advise.

[Linus Tremaine]

fixed

Turned out that one of the studs in the head was causing the problem.

Thanks