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Click on image for the lowdown. 
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| | | Forums66 Topics128,147 Posts1,056,801 Members48,454 | | 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: Oct 2001 Posts: 578 'Bolter | | 'Bolter Joined: Oct 2001 Posts: 578 | My problem: coolant flowing out of the overflow tube.
I put in a new thermostat and new thermostat gasket. I filled the block with coolant first. I topped off the radiator, but not too full. Here's what happens now. I started the engine from cold. I walked back and forth from the open radiator cap to the temp gauge. As soon as the temp gauge showed warm, I looked down the radiator and could see when the thermostat opened 'cause the coolant rose up within the radiator and into the overflow tube. Does this indicate a blockage somewhere?
Tips and comments please?
"Happiness equals reality minus expectations" - Tom Magliozzi
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