No, shouldn't be, but I'll check. I put new U-joints in when I converted to 4x4. The front driveline was bent from the yard and I had to have it re tubed so I put in new joints. Can't recall if I ever went fast enough last year to get the noise. I'll check the driveline tonight and let you know. Brian '65 D1200 4x4 4bbl 4.11 the "Taxi"