With a 7/16" base thread and a 7/16" rocker thread, the Hi-Tech stud features rolled threads for maximum contact and a ground-flat top for accurate valve adjustment. This stud has a 1.900" effective...
With a 3/8" base thread and a 7/16" rocker thread, this rocker arm stud has a 1.900" effective length for use with Mark V and Mark VI Chevrolet Big Blocks.CatalogUser 1