yea it does appear that the gap is greater than what is on a stock 440 head I have sitting around.
Yes the keeper for the intake does appear less round, like it was designed to have a gap. I dont know if it was for a bigger valve because I have the 3/8ths valve stems. I dont think Mopar had bigger stems available for the 906 heads? but if the valve stem should be bigger that only means the gap would be bigger too. If it was meant for a smaller valve you may not have the same engagement on the valve stems. but the amount of the keeper sticking out is what appeared troubling to my friend.
yes they are
Oh I agree they are wrong. What is on the heads do not match up with what is on the paper work. Unless something got screwed up majorly at summit when I order them so many years ago (unlikely, but not impossible) and they sent the wrong stuff. But I feel that I ordered what I did, which was wrong for what I have, and the machine shop used something else. I do not know what they used (and ultimately is on the heads to this day) and has me thinking I need to get new keepers and retainers. Would you agree? I have no idea how else to ensure that the parts will match up and work together correctly.
