351w heads on 289

[Kcode351]

Regular rocker studs were usualy just pressed into place. Under extreme conditions they could be pushed out of their holes. To have them pinned is when a machine shop drills a small perpendicular hole in the stud to put a pin going through the head and stud to anchor it into place. Another option is to have the stud holes threaded so you use run screw in studs. I have a pair of ported HiPo 289 heads they ar set to flow a prety high cfm. They have double springs, screw in studs, billet roller rockers, and guide plates. The only thing I wish I had done was adding hardened seats when I had them do a five angle valve job. Too late now, maybe next time. I can't wait to run them. They are going on my 351w. Looks like finances are going to push it back another six weeks. So many dreams, so litle money.