To make decent power up top with an XP cam, you'll need 130# springs...which you should use a double rollmaster.
I would really recommend that you consider a bigger cam, especially since you have to do head work. XPZ is awesome up top.
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03-25-2013
To make decent power up top with an XP cam, you'll need 130# springs...which you should use a double rollmaster.
I would really recommend that you consider a bigger cam, especially since you have to do head work. XPZ is awesome up top.
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