Detroit 60 series 11.1 vacuume from blowby tube

I have a 60 series 11.1. On Monday it broke down.the drive gear was chewed up and the aircompressor blew a head gasket.also the valve cover expanded and blew a gal or so of oil out of the expanded side.so I replace air compressor, fuel lines,drive gear and valve cover [ it was unusable it cracked when it expanded] ,and the gaskets and grommets that go with it.
Now it runs ,but it smokes and it's got vacuume from the blowby tube.any thoughts on what caused the initial carnage,and what's up with the vacume?the smoke may just be from cold start in 20°f weather.

 

I appreciate the reply.i installed a new reman aircompressor,and new governor.i hadn't thought about the air dryer.im betting it's at least a decade old.the vacuum from the blowby tube is after all the components I mentioned were replaced.I'm scared to run it because my thoughts are the same as yours as far as thinking I only treated the symptoms and not the cause.

 

I've been running it ( not driving it though)without the air filter.

 

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I reassembled the filter plumbing and I have a load from kc to ia on Monday.ill let everyone know how it goes.there's still no blowby at all even though there was considerable blowby before,and the theres a still suction at the blowby tube.its not enough to suck up gravel but readily pulls smoke up.