I was checking in my gm parts book about 302 factory rocker arms part#3974290 it states that the rocker arms have a "V" stamped at the end of rocker. i recently saw some on ebay that sold and they had a "O" stamped at the end of the rocker. does anyone know the diffrence? thanks for any input.
Originals have the "O". Later replacements do not. They are also very strong. What we use in Stock Eliminator.
Jerry