The tube that comes out of the side of the block and curves below the motor creates a partial vacuum inside the crankcase when you drive down the road. The fresh makeup air comes from those slots that you mentioned.


1951 GMC 1 Ton Flatbed -- It is finally on the road and what a great time I have driving it!
1951 1 Ton Completed


My Chevy Master 4 Door is on the Road!