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Click on image for the lowdown. 
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| | | Forums66 Topics128,014 Posts1,055,333 Members48,419 | | 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!
| | THANKS!
For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down with Ads! Again, thanks! | | | | Joined: Apr 2006 Posts: 506 Shop Shark | | Shop Shark Joined: Apr 2006 Posts: 506 | Casting # 3851659 is listed as a 292 from 1963-66 and had 7/16" Bolt Holes in Crankshaft Flange.
Starting in 1967, casting # 3851659 had 1/2" Bolt Holes in Crankshaft Flange.
-Tom
1950 Chevy 3100 w/ 1956 235
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