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Click on image for the lowdown. 
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| | Forums66 Topics128,052 Posts1,055,741 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!
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!
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| | | Joined: Sep 2006 Posts: 2,393 Shop Shark | | Shop Shark Joined: Sep 2006 Posts: 2,393 | Just be careful how much vacuum you apply.A needle valve would help control this. Too much vacuum and you can actually cause bubbles in the system. I'm basing this on a similar set up we used in a chem lab at work.
Drew
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