Reading the other 289 head thread brought up a question that I have. Probably a real simple answer but I can't find it. When looking at the charts for head casting codes, I see many revision letters in the chart for the same basic casting number like C6AE and C8OE. They are followed by a -F, -J, -M, ect... so it would look like C8OE-J in the chart. I have 3 sets of heads that I 'm looking at but I can only see the basic 4 digit casting number like C8OE. Where do you look for the revision letters to ID the head?
right there. It should be just like you wrote it. C8OE-J etc, the rev. letter is not stashed somewhere else that I know of, unless heads are different than everything else. Ill have to take a look at mine tomorrow. Never have found a listing of what the revs translate to, although you can figure some of them out just by what they went on. An example I did find was on a 289 intake that happened to match my '66 motor -a was 2v, -b was 4v. It's just an engineering rev, whenever they did a change or new design, it got a revison number. The -a 2v, -b 4v, is pretty logical, design the 2v intake, then design the 4v intake. But that won't be the case universally. The list has to exist somewhere, i'd sure like to see it.
Thanks for the reply Rick - I did a little digging on the web and found a picture of some D0OE 351w heads and they clearly (or as clear as this crappy picture gets) have a C below the D0OE which coresponds to my book that shows 2 heads with a D0OE - D0OE-C and D0OE-G So now what I need to find is a chart that also has the heads listed that have no revision code, but I can't find that for a C8OE. Anybody else have heads they can look at for the revision code? ************************************************ Found another picture - now it makes sense - just need to find a chart that has every head on it. Or is a head with no revision number an "A" as far as the charts go?
REPEAT LINK from 289 Thread I just found one of the most complete web sights for information on castings, displacements, valve size, factory specs in general. Just look up the make and year in question and don't forget to scroll down as there is more then 1 page for each year. I found it while trying to reseach the heads I'm working on right now. This is one that has to book marked by everyone that works on engines. http://www.nhra.com/tech_specs/engine/index.html Enjoy Eric J
