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| | | Forums66 Topics128,051 Posts1,055,710 Members48,426 | | 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!
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on the Internet for over 30 years! and not clogged down with Ads! Again, thanks! | | | | Joined: Jul 2005 Posts: 11 Junior Member | | Junior Member Joined: Jul 2005 Posts: 11 | I have a 1945 chevy 1.5 ton and I'm trying to figure out if it has a 216 or an early 235 in it. The block number is BG712427, Does anyone no how to determine what it is? Thanks in advance, dcolella
Dcolella
| | | | | Joined: Mar 2005 Posts: 59 'Bolter | | 'Bolter Joined: Mar 2005 Posts: 59 | Do you have a casting number? It should be on the side of the block just below the side cover under the 1&2 plugs. Based on bg it appears that it would be a 235 from this page. 235 casting numbers | | | | | Joined: Jul 2005 Posts: 11 Junior Member | | Junior Member Joined: Jul 2005 Posts: 11 | Thanks for your reply im4racin. The casting number is 712427 which had the prefix BG. I couldn't find the cast number listed anywhere. Did they have the BG prefix on 216's?
Dcolella
| | | | | Joined: Mar 2005 Posts: 59 'Bolter | | 'Bolter Joined: Mar 2005 Posts: 59 | is that number stamped or cast? the number seems to be a serial number, a casting number will be raised from the side of the block
rh | | | | | Joined: Dec 2004 Posts: 452 Member | | Member Joined: Dec 2004 Posts: 452 | BG is the prefix for the RPO 235 used in the conventional heavy duty trucks (1.5 ton) in '42-'45. 712427 would be the engine build sequence number.
Curt ---- 1953 Chevy 6400, 1957 Chevy 2dr Sedan --"Mediocrity is easy, the good things take time"
| | | | | Joined: Jan 2005 Posts: 1,682 Extreme Gabster | | Extreme Gabster Joined: Jan 2005 Posts: 1,682 | According to the casting number information at the inliners.org website, the BG prefix was used on 235 engines in both '42 and '46 ('43 thru '45 isnt listed on their chart)
an idea is only stupid if you think about it rationally.
| | | | | Joined: Dec 2004 Posts: 452 Member | | Member Joined: Dec 2004 Posts: 452 | Most references (even Chevy literature) don't show much for the years '43-'45 because of the war restrictions during those years (civilian trucks weren't built, except by special allowance). There was a small amount of civilian production that started back up in '45. I think it's safe to assume that the '42 engine prefixes carried through those years. And I should have included '46. That's '46 first design, or interim series. '46 second design was a new series with new truck ID and engine number prefixes.
Curt ---- 1953 Chevy 6400, 1957 Chevy 2dr Sedan --"Mediocrity is easy, the good things take time"
| | | | | Joined: Jan 2000 Posts: 2,074 'Bolter | | 'Bolter Joined: Jan 2000 Posts: 2,074 | I found the numbers '235' stamped on the side of the pan (it's different than the 216 due to longer stoke) after I spent hours searching the numbers. | | | | | Joined: Jul 2005 Posts: 11 Junior Member | | Junior Member Joined: Jul 2005 Posts: 11 | Thank you all for your replies... Yes the number I provided is stamped in the right side of the block near the distributer. I guess it's safe to assume this is a 235, I will check the side of the pan for any signs. Thanks again, DColella
Dcolella
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