First off, I am new here so be gentle...LOL. I've been a lurker, not a poster, because anything I had of relevance had already been said, and I'm not one to "jump on the band wagon" just to get my post count up.
I have been trying to run down some numbers n a set of 289 heads I have and have had no luck at all. I have googled, excited, and yahooed about as much as I can stand....that's why I'm seeking the help of the Lords of Ford.
What I have has in the "casting numbers"(?) under the rocker cover area, is ( left to right as reading) 289 - C8ZE-B - HP. The HP is where the date code would be. Under the HP is a set of #'s ( what looks like a screw on plate, that has 8K26 on it.) Also, under the head (block side) where the casting # would be, is filled. There is an area where it should be but no numbers. And there is an "HP" on that side as well, along with a "B" Reading fom L-R on the head bottom B - HP - (# blocked out).
Are these an early High Performance 289 pair of heads? Anyone point me in the right direction to info on these? Thanking you all in advance.