cam degreeing needed?

"usually you degree a cam if you want to change the Cam timing.
Otherwise it is only a check if the factory specs are correct."

I disagree. Degreeing is to make sure with the stacked tolerances and accuracy of machining on the block, crank, cam, & timing set they still allow the camshaft to be installed where the manufacturer intended it. Only after you do that is it for adjusting cam timing. And with MP - yes degreeing is a MUST. The last 383/335 horse MP cam I degreed was 6 degrees retarded from the cam card when installed with the dots lined up.