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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: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | What year 2-ton?
Is a conventional cab or a COE?
I think that all 261 have the bars (as do some 1953 235s, and maybe early-1954-truck 235s).
The 58-63 261 blocks with 1/2" NPT oil-filter-line holes are the one capable of having a full-flow oil filtration systems.
All 261s have a "full pressure" (high pressure) lubrication system.
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