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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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For helping keep this great
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#39219 02/13/2002 5:25 PM | Joined: Dec 2001 Posts: 1,745 Member | | Member Joined: Dec 2001 Posts: 1,745 | A little side question. I didn't even know my truck had the heat riser valve until you guys mentioned it and I started looking for it. I found it and it moves freely. But the spring seems very weak and I am not sure how this is supposed to work. Does this work by itself? Do you manually close the valve during cold starting and how does it stay closed? How does it then open again? Stupid questions I know...
54 3100 with 235
62 flatbed dump C60 with 261
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