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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!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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| | | | Joined: Feb 2001 Posts: 39 Member | | Member Joined: Feb 2001 Posts: 39 | hello all. what type(weight) of gear oil should i use in the rear end of my 48 GMC? it's a 1 ton dually. also, what kind of oil goes in the 4-speed crash box? thanks!
1948 GMC 250 Series Flatbed
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