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IM USING SCORPION ROLLER ROCKER'S PART #IOOI ON MY SBC WITH DART 2 HEAD'S AND STOCK LENGHT PUSH ROD'S MY PROBLEM IS THEIR'S ONLY 4 OR 5 THREADS ABOVE ROCKER'S FOR NUT ANYONE ELSE HAD THIS PROBLEM
my head's have not been milled andlluciano77 said:I have pretty high pressure valvesprings. I originally had ARP regular length studs. I kept breaking them. I switched to the studs that are designed for roller rockers, and haven't broken one since. They are approximately 1/4" longer. That will give you more thread.
Just make sure your valvetrain geometry is correct. With excessively milled heads, you may need different pushrods.