A 5000 stall on the street, hmmmm. Driving around town at say 30 miles an hour the engine is running at what, 2000-2500 rpm in high gear. So the converter is way down on its stall speed slipping like crazy and generating a ton of excessive heat (nice hot transmission oil), helps your engine use excessive 4 buck a gallon gas. Yup, nothing like an 8" converter for the street.