Here’s that really really cool cast aluminum oil pan for SBC with the fins and all. It’s made in foreign lands by foreign hands. Apparently they didn’t have a good one to copy. Anyway these things Would/could be fantastic except for one thing... So the very sneaky and smart oil has devised an elaborate escape route and out smarted the design team, the QC department, the venders, and the guys installing this thing. Something,,,, I can only guess it was the engine oil and apparently smarter than these guys,,, talked this entire chain of industry giants into this. It’s not pretty because there’s a lot of guys complaining about these pans and oil escaping. In that picture I’m hold the gasket in the best I can. There’s well over an inch of extra space or 1” extra gasket to shove into the space. The oils fools the people thinking that the gasket won’t pucker up. Here’s the same gasket on a newer steel pan from a crate engine. That’s about 3/8”.