I am working on getting a 1976 Ford Courier up and running. One of the rocker arms is missing this part (circled in yellow in the following pictures), and that rocker arm destroyed the camshaft and cannot be adjusted without this missing part. I ordered new rocker arms, and they are also missing this part. The part is the nut that goes on the end of the bolt that runs through the rocker arm.

In the first image, the rocker arm on the right has this part (circled in yellow). The rocker arm on the left does not have this part.
https://goo.gl/photos/FrDPvfCcmax1BY4f8




This is another view of the missing part.
https://goo.gl/photos/Xk69kkppoeQyXyY7A

 

I think that this has been solved. It's a rocker arm adjusting screw valve. D27Z-6549-C I just ordered some for about $2 each.

 

good you found some,if your in need of some parts i have a 72,78,80 i am parting out,

 

I might take you up on the offer. Where are you located, and do you have any photos of the 1972? Thanks!

 

far northern ca,mostly just parts,motor parts,transmissions,rear ends,ect