I use the 1970-71 stock Hemi-440-6pak oil pan in my Duster with a stroker BB,my motor is slid back one inch from the stock location based on the trans mount. I did have to trim the backside of the K member some to get the pan to clear, I used the stock 440-6pak 3/8 pick up also
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The motor pulls really hard to 7300+rpm and I've never had a oiling related problem yet in three + years of hard street and strip driving. I use a stock Mopar windage tray and I built the crankshaft scraper for the motor
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I also had the #4 cam journal grooved so the rockers would oil full time
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still no oiling return issues that I'm aware of, the motor has been apart several times changing parts and inspecting for the next years use
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there are a number of oil pans that will work in your chassis but most of the aftermarket ones are a deep sump like the Moroso and Milidons, which for a street car I don't like or use
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