[quote="hammertime"]
Originally Posted by al34
you will also need a relief valve on the valve cover if you are not using one on the suck fitting
thats not 100% true. You may or may not. depending on the pump, pulley sizes you run.
every set up i have seen has a devise to relieve vacume at a desired point so there may be a few set ups without a vacume relief devise but most are using it