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Click on image for the lowdown. 
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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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| | | | Joined: Sep 2001 Posts: 29,270 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,270 | The original 1953 thermostat would have been rated around 160 degrees: starting to open at around 150 degrees and fully open around 180 degrees.
4 psi radiator cap
The 1954 high-pressure 235 in my Suburban would not reach operating temperature (160 degrees) when running and sitting still and with no thermostat. This was with a cleaned block-interior and new-core original radiator. | | |
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