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Click on image for the lowdown. 
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| | | Forums66 Topics128,021 Posts1,055,357 Members48,420 | | 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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For helping keep this great
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on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Jan 2010 Posts: 4,263 Shop Shark | | Shop Shark Joined: Jan 2010 Posts: 4,263 | Have a 235, flywheel has a triangle, a line,a circle and another line, Not sure where you guys got the U C. I dont have those markings, and I dont have the BB What is the circle you reference? Do you have a pic? ...some Call it a BB... It's a circular dimple in the flywheel... | | |
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