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Here is Holley’s new swap pan (left) next to the factory Corvette LS3 pan. The integral GM baffling is good, but Holley’s design is more effective at keeping the oil near the pickup under hard acceleration or lateral loads. Speaking of pickup, note the different routing of the tube, which will require a little alteration to the LS3’s windage tray. Also note that the “Oil Change Required” sensor will not be retained.