Reply to "AFD Alum heads"

George PAdmin.

Hey everybody,

I e-mailed David Webb of AFD for an explanation & he very promptly responded. The intake ports on the AFD 2V head are 0.100" higher, the manifold flanges of each head are extended so that a 2V manifold sits properly on the heads (ports & runners are in alignment), and the aluminum spacers are provided to merely fill in the gap between the manifold & lifter valley. He wrote quite often the cork gaskets are satisfactory & the aluminum spacers aren't even needed.

By contrast, the CHI 3V head has raised the ports about 0.375", their spacers are much thicker and definitely required if you are running a non-CHI 2V manifold with their head.

your friend on the PIBB, George

10/7/055:19 PM

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