[moparts]

Does anyone have any old GM tech manuals or parts manuals with this head valve info in it???? 69 dated????

Not having any luck finding the 219/172 combination in any parts books under 427 listing. That combo show up under the 396 listings. Rob and I have been comparing the GM by the numbers book with Gm performance parts catalog and my Sealed Power and Perfect Circle parts catalog and are having lots of problems getting information to match.

Now I am not saying that my parts books are always correct (have a whole shelf full of returns to prove that) but it sure seems funny that out of 3 different catalogs that none of them show the 219/172 combo for the 427 engines.

Now with all that being said, and assuming that the machine shop is telling us right,(assume = ass u me) is it possible that some of the late made 840's would have had 188 ex. in them? and how do you prove it??????