Breather to PCV

famous bob said

SURELY U JEST , NO VACUUM LEAKS , AND NO , A SOLID .600 LIFT STREET ROLLER w/ 250 duration at .050 , will not idle down to 750. I could get it to idle down a bit more , but doesn`t deem to benefit anywhere , ''vacuum leak causing hi vacuum'' , ----------you`ll have to explain that one to me .
I think the good vacuum is from the gapless rings ----------and a ''finally'' sealed up engine .
If it had a smaller cam , it could probly run power brakes , which I dont have .
It is running very well , and raps like a small block.

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Bob I agree with ya crankcase vacuum is a good thing, but 5" is alot, it has to have a source creating it. The only source that can create that much vacuum is the induction system. Hence my statement " you have an internal vacuum leak causing high CRANKCASE vacuum".
My thought is that you may have an intake manifold vacuum leaking into the crankcase.
We can throw all of this out the window if you are running a vacuum pump and or a header e-vac system or just call me Nuts.
Just for conversation how much intake manifold vacuum do you have at idle? What is your current idle speed?