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Click on image for the lowdown. 
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| | Forums66 Topics128,051 Posts1,055,764 Members48,426 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
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on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
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| | | Joined: Oct 2021 Posts: 6,761 'Bolter | | 'Bolter Joined: Oct 2021 Posts: 6,761 | Get under the truck with the rear wheels raised and turn the driveshaft by hand and see if there is slop or slack in the U joint before the axle begins turning. Even a few thousandths of an inch of play can give you a vibration.
Try to move the shaft from side to side and see if the is any play at the U joint / yoke.
1950 Chevrolet 3100 (Ol' Roy)
1939 Packard Standard Eight Coupe (The Phantom) | 1956 Cadillac Coupe de Ville (The Bismarck) | 1964 Ford Galaxie 500 coupe |1966 Ford Mustang (Little Red) | 1969 Pontiac GTO (The Dishpit) I 1979 Ford F-100 | 1976 Ford F-150 (Big Red) | 1995 Ford F-150 (Newt)
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