Crankcase Pressure

[Alan Nyhus]

Originally Posted by HandOverFist

I'm no expert for sure, but I also don't have any Dart blocks lying about. It's my understanding that the Dart blocks oil differently and likely less oil up top to contend with. Using these old GM blocks my solution just seems to make sense to me.

Rich, here's a Dart SHP:



The valley is much like a big block Chevy. They are a priority main oiling system, so the mains get oil first, then the cam/lifters....just the opposite of a factory small block. You can flood the top end pretty easily, so the lifters need to be chosen carefully.

[HandOverFist]

Originally Posted by Alan Nyhus

Rich, here's a Dart SHP:



The valley is much like a big block Chevy. They are a priority main oiling system, so the mains get oil first, then the cam/lifters....just the opposite of a factory small block. You can flood the top end pretty easily, so the lifters need to be chosen carefully.

That's a nice looking piece there Alan...maybe some day before I die I will get to join the big boy ranks. With holes that large I would at a minimum have to screen them just for peace of mind.