Not surprised the rocker broke. Look how thin the alum is, to the right side of the roller where the body has been machined for spring clearance. A great example of why it is best to use only steel or s/s rockers.....
I agree. My next build 422 is going to use the older non SS Comp Cams Rollers in 1.5 ratio I have here new in box. With Smith Brother's push rods after we measured for length.
I have some Crane 1.6 new in box too and a second set light use 6 miles driving around. But would not want to use the Crane Gold Race eveyday