Not Ranked
What you are describing is stock non-adjustable rockers. If the machining was correct or the heads have not been surfaced to many times these are just tightened down to torque specs. If tightening down keeps the valves open you may have to buy a comp cams adjustment conversion kit.
Comp Cams Rocker Arm Adjusting Nuts & Kits - JEGS
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Wayne
"Everything is alive. If you get angry at a vehicle or the trans, it won't fix until you apologize and say you are sorry." "The vehicle always knows what it is doing and what the cause of it's bad feeling is. If you ask it humbly what the problem is, it will tell you. Then you and it will both be happy."
Gil Younger
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