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Mod | | | Forums66 Topics128,162 Posts1,056,949 Members48,458 | | 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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| | | | Joined: Aug 2012 Posts: 338 Shop Shark | | Shop Shark Joined: Aug 2012 Posts: 338 | On my firewall I have an oblong opening on the passengers side. It is about 3 inches long by an inch wide, near the heater. I thought as I put the truck (1953 chevy 3100) together I would know what went there. It is not for my heater. Any idea? My setup is just like this. Maybe it was for a different type of heater Hole in firewall
Last edited by BSCowboy; 06/25/2013 8:40 PM.
| | | | | Joined: Jan 2010 Posts: 4,263 Shop Shark | | Shop Shark Joined: Jan 2010 Posts: 4,263 | ...click... Heater valve? | | | | | Joined: Aug 2012 Posts: 338 Shop Shark | | Shop Shark Joined: Aug 2012 Posts: 338 | So my heater is different than that | | | | | Joined: Jan 2010 Posts: 4,263 Shop Shark | | Shop Shark Joined: Jan 2010 Posts: 4,263 | this manual shows diffrent styles of heaters ...click... | | | | | Joined: Jun 2012 Posts: 85 'Bolter | | 'Bolter Joined: Jun 2012 Posts: 85 | its for the "Temp Control Valve" on the other style heater. | | | | | Joined: May 2005 Posts: 8,983 Sir Searchalot | | Sir Searchalot Joined: May 2005 Posts: 8,983 | Here's one guys way to "plug" it. 53FirewallUsed it for the exit of the heater hose shut off valve cable.
Right is right, even if everyone is against it, and wrong is wrong, even if everyone is for it. - William Penn
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