Reply to "Recommendations on intake manifold for A3 heads and shop that can bung it for EFI"

Those are "stock" and are nominal at 63. Keep in mind Ford expected you to mill the heads to what you wanted.

You can't get them under 60.

The decks are thicker then stock iron heads are for that reason. They were built as all out race heads at the time. I believe the advertised thickness is 5/8".

I think mine are shaved .020 and cc'd at 60. They wanted to get to 59 but thought that was a bad idea.

The ONLY way to do it is to cc them. You can actually do that yourself. It isn't difficult at all.

These heads will take a heck of a shot before you crack the combustion chambers.

Lots of used ones show evidence of "something" bouncing around in one of the combustion chambers at some point.


That indent below the chambers, on the edge of the head that looks like a thumb print is there to show you what was shaved off of the head.

Some heads will be stamped on the side .020, etc. Look for stampings like that. Most good builders will mark them with what was cut off.