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Click on image for the lowdown. 
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| | | Forums66 Topics128,081 Posts1,056,078 Members48,434 | | 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!
| | THANKS!
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: 181 'Bolter | | 'Bolter Joined: Apr 2009 Posts: 181 | Thanks for the heads up on the thermostat. I'll try to attach some pix of the 503.
1955 GMC 630, 1959 GMC W660, 1958 Chevy Spartan 80
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