| cam conversionNovember 24 2008 at 11:02 AM | Anonymous (Select Login 427Howard)
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| i have a 390 8v motor, with the factory (60s) heavy-duty adj. rockerarm assys( NEW ). can i change cams to a roller set up with 400psi open psi Comp cam#magnum308r pn33782-9,or will i destroy my assys? do i have to upgrade?
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