Are PCV needed?

500stroker said

It wouldn't hurt to run a pcv valve. The older the motor the more pressure it's gonna build in the block. Is there a baffle under the breather. I d vent and baffle both sides or connect a pan evac if you are running headers. Pressure in the block is rough on seals. Pushes oil thru guides and past crank seals.

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The motor is new, sort of, all new rings, bearings, block was hot tanked, Cylinders were in great shape, cleaned and reused original pistons. Summit cam and manifold package (mild cam). Oil pressure is 65-70psi when cold, and when warm and RPM is run up. Around 35psi at idle when warm.

I'll go ahead install a PCV valve and I'll have to check to see if there is a baffle in the valve cover holes. Thanks