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Click on image for the lowdown. 
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| | | Forums66 Topics128,181 Posts1,057,174 Members48,465 | | 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: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | Actually the hose going to the water pump is the return hose. The pressure comes from in back of the thermostat. With the engine warmed up & the fan on high grab the hoses. They should be about the same temp. & you should not be able to hold on to them over 2-3 seconds. If the return hose is cooler the core is plugged up. If neither one is real hot the therm. is bad. They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | |
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