Heard a clicking noise that became progressively louder on the passenger bank of my 302. Pulled the valve cover and checked all the rockers and pushrods. Found two in their respective positions to be looser than the other and pulled them. This is what I found.
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Balls had seperated from the end mating with the rocker on one and another end that mated to the lifters. Fortunately I was able to retrieve the ball. MY QUESTION: Has any one seen this before and does anyone know the cause? Stock length 6.272 push rods from Mustang Unlimited. Look to be a defective batch? One appeared to operate in this condition long as its end is mushroomed a little. They are stock length so I don't think they are too long, and all set up with rotation and proper preload at assembly...Baffled, but going to change all Pushrods

Looking to replace. Have GT40 Heads, Trickflow Stage 2 cam, Crane 1.7 rockers