That will give you a closed rate of 93 pounds, I don't think I've ever heard of a spring that low, and that's at a lower height than the 988 specs. If it's 93 new what would it be after five years? I know the spring is supposed to keep it's rate but we all know they, just like people, get weak with age. I wonder the reason such a weak spring was installed? Maybe to keep the studs in the head.
Summit also recommends the 988 spring for the 2801 camshaft. Looks like the springs you have are on the weak side. Pressed in studs should be good up to 275-300 pounds spring pressure, 988 springs are only 232 at 1.100". Do you have screw in studs and poly-locks?
