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7 members (Goach2, Dave1234, IHPWR, Hotrod Lincoln, TUTS 59, Peggy M, 1 invisible),
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Mod | | | Forums66 Topics128,206 Posts1,057,440 Members48,471 | | 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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| | | | Joined: Apr 2010 Posts: 13 New Guy | | New Guy Joined: Apr 2010 Posts: 13 | According to a lot of the information I've read it says the 250 wasn't available in the trucks until 1966. However my 1965 has the 250. It was a special ordered fleet truck for the Saskatchewan Government and built in Canada so I don't know if this changes things.
I have Leo Santucci's book on modifying the 6-cylinders and it lists that the the 250 was available in trucks from 1962 and my block's casting number is consistent with being a 250.
Any thoughts?
1965 GMC 910 Short Fleet 250/4-speed
| | | | | Joined: Sep 2006 Posts: 841 Shop Shark | | Shop Shark Joined: Sep 2006 Posts: 841 | over the years it could have had anything put in it. | | | | | Joined: Apr 2010 Posts: 13 New Guy | | New Guy Joined: Apr 2010 Posts: 13 | It's the original engine. When I pulled it a few years back I remember noticing that the numbers match.
1965 GMC 910 Short Fleet 250/4-speed
| | | | | Joined: Mar 2009 Posts: 788 'Bolter | | 'Bolter Joined: Mar 2009 Posts: 788 | 1963 and up According to a lot of the information I've read it says the 250 wasn't available in the trucks until 1966. However my 1965 has the 250. It was a special ordered fleet truck for the Saskatchewan Government and built in Canada so I don't know if this changes things.
I have Leo Santucci's book on modifying the 6-cylinders and it lists that the the 250 was available in trucks from 1962 and my block's casting number is consistent with being a 250.
Any thoughts? | | | | | Joined: Oct 2009 Posts: 15 New Guy | | New Guy Joined: Oct 2009 Posts: 15 | My 65 had one as well until it blew up.
How do I know so much about these trucks?
I stayed at a Holiday Inn Express last night.
| | | | | Joined: Apr 2010 Posts: 13 New Guy | | New Guy Joined: Apr 2010 Posts: 13 | My 65 had one as well until it blew up. That doesn't sound good. Mine had 94,000 miles on it when I pulled it and it was still running just fine. It'll be rebuilt (not stock) and put back in the truck. 
1965 GMC 910 Short Fleet 250/4-speed
| | | | | Joined: Oct 2009 Posts: 15 New Guy | | New Guy Joined: Oct 2009 Posts: 15 | Is ok...I found a donor 66 with 283 and 2spd powerglide.
How do I know so much about these trucks?
I stayed at a Holiday Inn Express last night.
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