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Click on image for the lowdown. 
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| | | Forums66 Topics128,035 Posts1,055,446 Members48,422 | | 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
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Feb 2000 Posts: 769 Shop Shark | | Shop Shark Joined: Feb 2000 Posts: 769 | If you were to shorten your road draft tube and put a jar on the end to catch the driping, it would no longer work. The road draft tube works by vacuum. As the vehicle travels down the road, the air passing over the end of the road draft tube creates a vacuum in the tube, which in turn draws crank case fumes out. | | |
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