intake rocker arm stud and valve spring



 

Awhile ago I built a mild performance 350 c.i. chevy s.b. I bought assembled World Products s.r. torquer cyl. heads. The engine ran flawlessly for 1000 plus miles. I then developed a serious miss and discovered a broken intake rocker arm stud and valve spring damper corresponding to that intake valve. The pushrod and roller tip rocker arm are fine. The valve spring looks good. Has anyone seen this happen? Any ideas would be appreciated. Thanks Mike.

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