I have mentioned these several times in the past but never published one, so today when I found one while rummaging around looking for something else I decided it was time to make one again.
I started with a rocker arm from a SB gm engine, with a bur file on a die grinder I enlarged the hole to accept a 1/2" T bolt then drilled out the threads from a lug-nut to become the swivel washer
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