Are Vent Tubes in the lifter Valley still being used in SBC's ( and others ) ?
This would be for a solid roller cam, wet sump with a good oiling sytem. Used for LSR and somewhat of a Street Car
I am hearing info on both using and not using, Those using say still say it increases HP and those that dont run them say it doesnt do anything.
I know of many who have machined boxes to block off the long slots over the cam in a BBC for the same results, so it seems something must be there.