Vacuum Pumps
Guys I've developed a problem this year with crankcase pressure. I don't currently run a vacuum pump and I'm thinking it's time for one.
I'm still running my 540BBC the only changes I've made to it this year was to port the heads and build a set of headers. I picked up 2.5 tenths to my best of 9.12@ 147. Is there a horsepower level that it pretty much needs one over pan e-vac tubes?