ls7 dry sump plumbing help

[71RS/SS396]

Originally Posted by Bowtieracing

With petersen tank in is off course bottom of the tank and return from the the top. But how about breather tubes from valve covers? Or are the really needed?

I modified my tank so it would have 4 -12 fittings on the top, then I ran a -12 line from each valve cover to oil tank, a -12 return from the pan to the tank, and a -12 line from the oil tank to the catch can/breather. I modified the stock valve covers by welding a -12 male bung into the fake oil cap and pulling the stock breather tube out and drilling the valve cover and welding another -12 male bung in. The more venting you have on the top of the engine the better the chances are you will maintain a good ring seal.
I plumbed my pan differently than posted above, I used a full flow 90* swivel in one hole like this http://www.summitracing.com/parts/rus-612270 and a straight fitting like this http://www.summitracing.com/parts/rus-670730/overview/ then used a 90* hose fitting, this put a stagger in the fittings in the pan so the hoses could come straight forward and stack on top of each other, be sure to use full flow radiused fittings so you don't restrict the flow.