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Click on image for the lowdown. 
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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!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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| | | | Joined: Jan 2010 Posts: 61 New Guy | | New Guy Joined: Jan 2010 Posts: 61 | They are part of the crankcase ventilation system. Air goes in those slots and out the draft tube. I appreciate it. Thanks!
'51 Chevrolet 3100 216 5-Window
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