Should I change my cam?!

If you own the cam and can return or sell it do so
If you own it and can't return it install the way cuda said above
a d check the intake close point at .004 and .006 and .008 cam lift run a compression check
if you then find it is like cuda said and you need converter and gears to "fix" you just have the wrong cam
you know where your intake close point is with that am advanced and can estimate how far you have to move it shorten it) to get the power where YOU want it
ps it's easy to shorten a big cam with a regrind. and reface the lifters if you are on a budget
sometimes without even changing pushrods