Other than cc'ing (measuring combustion volume), is there a way to tell how much a Ford high head (26-27) has been milled? I have one that I know has been milled probably .030; maybe .050, but I don't know for sure. Can you measure the distance between the block surface and the top of a head bolt boss on the edge of the head? If so, How much should that measurement be?
I have four unmilled (as far as I can tell) high heads in the garage. All of them measures between 2.680" and 2.700", most of them around 2.680".
Thanks, Roger. I'll measure mine. I should see an appreciable difference to your measurement.
Copied this offn the forum a couple of years ago:
Ford factory drawing it is 2 11/16 or 2.6875.
Thanks, Todd and Roger.
Ken is correct. Factory drawing states the following:
Head bolt boss to milled base is 2 11/16".
Water outlet bolt hole center to milled base is 2 31/32"
Is this just for 26-27 heads?
What about earlier ones?
Manuel in Oz
Manuel, someone will either back me or say I'm wrong, but I would think low heads and aftermarket heads would have different specs.
According to the Model T encyclopedia:
07-17-14 T401C Added 3/32 to bottom of head, increases all top to bottom dimensions and lowers compression.
I measured the head that I thought had been milled. Either I measured the wrong head, or the machinist told me he milled it, but didn't and ripped me off.