wet sump vs dry sump oil system questions

About to finish my build, its an iron block Ford 572, 4.5 Velasco billet crank with Chrysler rod journals, Arias blower pistons at 11.3-1, Brooks aluminum rods. About to wrap up the build but am now second guessing the oil system. Was going to run a wet sump with a high volume pump but am wondering if it will live that way or do I need to go with a dry sump. Induction is a SSI b rotor on alcohol, looking to make 20-30 psi boost max and turn 7500 max. Basically a high end bracket motor that I want to have fun with. Thanks! Chris

 

You're always better with a dry sump deal. With the dry sump, you always have a large reservoir of oil to draw from, and the crank is not splashing around in the oil. With a wet sump, people tend to only put enough oil in to fill the pan, even though most of the oil will be up in the lifter valley when you're up in rpm (staging or at the top of the gears). More often than not, the wet sump will run out of oil by the finish line, or as you're shutting the motor off, causing bearing damage that will kick the rods out on that run or the next one.

 

If you still go with a wet sump, I'd put an accumulator on it. I like the idea of a lot less oil to get under tires with a dry sump if you kick a rod, too.

I believe it was David Reher who said take your favorite wet sump pan, put all the trap doors in it you want. Fill it with the number of quarts that'll be in it (like he said above, less on the top end), then tilt it 45 degrees forward to see where all your oil is under braking. He was talking about flat bottom, wet sump pans with no sump at all.