The reason I said it could be the carburetor or tranny is when I go unevenly over a speed bump maybe the body is flexing which is flexing something in the driveline and binding it. I don't think it would be back at the differential or back of the tranny since they have U-joints on each side of the drive shaft. I'm thinking maybe torque converter. It's kind of like a whipping action when this occurs. If it was a short then it would happen over any bump wouldn't it?
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