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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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#45919 06/06/2005 5:51 AM | Joined: Jun 2005 Posts: 5 Junior Member | | Junior Member Joined: Jun 2005 Posts: 5 | I just bought a 1963 chevy shortbed stepside. It has a strait six in it and the block number is 3994257. I cant seem to find this number anywhere. Can you help? I need to know what it is so I can buy the parts to do the tune up.
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#45920 06/06/2005 6:23 AM | Joined: May 2004 Posts: 920 'Bolter | | 'Bolter Joined: May 2004 Posts: 920 | According to a book I have, Chevy pick-ups 1946-1972 by John Gunnel, 1963 intoduced 2 new sixes. The standard motor was a 230 and the optional motor was a 292. The 230 is described as an overhead valve design with wedge shaped combustion chambers. 140hp/220torque. The 292 had aluminized inlet valves and chrome top piston rings. 165hp/280torque. This is what they would be if your motor is original. Hopes that helps narrow it down. | | |
#45921 06/06/2005 7:59 AM | Joined: Dec 2004 Posts: 452 Member | | Member Joined: Dec 2004 Posts: 452 | Oldtruck, that block casting number is from a '67-'72 250. I found it listed here.
Curt
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1953 Chevy 6400, 1957 Chevy 2dr Sedan
--"Mediocrity is easy, the good things take time"
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#45922 06/06/2005 11:36 AM | Joined: Jan 2001 Posts: 662 Shop Shark | | Shop Shark Joined: Jan 2001 Posts: 662 | Get the stamped number next to the distributor, last two or three letters then visit: http://no25.homestead.com/page3.html | | |
#45923 06/07/2005 5:02 AM | Joined: Jun 2005 Posts: 5 Junior Member | | Junior Member Joined: Jun 2005 Posts: 5 | Hello everyone,
Thanks for all the info regarding my motor. I believe that it is a 250. I am interested to see what kind of head is on it. I am wondering if this is a frankenstien motor, you know mixed and matched. Does anyone know if the 250 is a good motor? Where would I go to get the spec's?
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#45924 06/07/2005 6:01 AM | Joined: Apr 2002 Posts: 1,571 Shop Shark | | Shop Shark Joined: Apr 2002 Posts: 1,571 | That engine has 7 main bearings. It's basically bulletproof. The "Chevy Inline 6 Power Manual" is a great source of info, as is the article that recently appeared in Hot Rod magazine. | | |
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