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Click on image for the lowdown. 
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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!
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| | | | Joined: Sep 2001 Posts: 29,270 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,270 |
In 1954, all driveshafts EXCEPT the 6-lug 1/2 ton were totally open driveshafts. The 1955-1st series 1/2 tons were the first "year"/series 6-lug 1/2 ton trucks with an open driveshaft. It looks like the same 1/2 ton pinion seal was used from 55-59 (and even later).
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