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| | | Forums66 Topics128,117 Posts1,056,296 Members48,439 | | 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: Oct 2000 Posts: 244 'Bolter | | 'Bolter Joined: Oct 2000 Posts: 244 | I have a 1953 GMC with a round circulating type heater is there an inlet and outlet on the two tubes? When the heater is installed one tube is above the other. | | | | | Joined: May 2015 Posts: 11,070 Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums | | Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums Joined: May 2015 Posts: 11,070 | I would put the outlet hose (the one going back to the engine) on the top. That helps prevent air collecting in the top of the heater core. If that wasn't an issue, it wouldn't make a difference which way the flow goes.
Kevin 1951 Chevy 3100 work truckFollow this saga in Project JournalPhotos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together. | | | | | Joined: Jan 2010 Posts: 4,263 Shop Shark | | Shop Shark Joined: Jan 2010 Posts: 4,263 | | | |
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