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Click on image for the lowdown. 
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| | | Forums66 Topics128,012 Posts1,055,318 Members48,419 | | 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: Apr 2009 Posts: 232 Shop Shark | | Shop Shark Joined: Apr 2009 Posts: 232 | Does anybody know approximatly how long it shoud take for the heat riser flap to move after startup? I have a new bi-metal spring and the flapper does not bind but it appears to remain in the horizontal position even after reaching full water temp. | | |
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