OlBlue, I have several original GM parts books , printed in the early 70's. None show any sort of thrust washer or list the part number you mentioned.It may have been deleted by the time my books were printed.I 've had a few 235/261's apart and never seen a thrust washer between the gear and pump, and the 3 I have rebuilt and running over the last 7 years don't have them so...who knows?
Chiphead ,your email is out to lunch,send me an email, I have some info on the mini HEI. Here's my email ,no one else can look at it ,lol.
[email protected]
