I just got the olds script valve covers from GM performance parts and they don't have any provisions for breathers in them. Is anyone else using these and what are you doing for a pvc?

 

I have the same ones and had to drill an opening for a breather/pcv then weld a baffle on underside. It works good but like you I was thinking, WTF. Here's a pic. Hope it helps

 

I've seen some older cars at car shows that don't have any holes in the valve covers, one in particular is a friend of mine. Has a 1964 Impala with a 396 original engine with nothing in the valve covers. I never thought to ask why it was like that, without a PCV and breather.
I'd hate to have to drill holes in them if they aren't really necessary.
Eric

 

No original 396 in a 64 Chev.


Chevrolet PCV and most others in that time used an open oil fill cap as crankcase air intake and generally routed PCV valve (if equipped) from the old road draft tube location at back of engine block into the carb baseplate.

 

Hmm,maybe its a 327. Orange block anyway. I will see it this weekend and have a looksie & confirm my memory. Now you have me wondering if my memory is gone, I know its going haha.

 

I had holes drilled in mine to accommodate the correct grommet for the push in after market breather and the line to the carb base.

 

If it is a 396, it is not original in a 64 Impala. The 396 came out in 1965 and was a replacement for the 409.

 

Well that stinks I was hoping to not have to modify brand new valve covers