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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!
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| | | | Joined: Jul 2013 Posts: 863 Shop Shark | | Shop Shark Joined: Jul 2013 Posts: 863 | Definitely soldered!! You'll need to clean the area beyond clean solid core solder and a lot of flux and a good torch to float the solder. Don't get the core too hot, or you'll lose the soldered core seals. Make sure you check for leaks in a tank of water with a little air pressure in the heater core itself. I've seen them braised on in later years, but even my 1958 Chevrolet heater core bracket was soldered. Hope this helps.
Tim
"Pay attention to the details! It ALWAYS pays off."
1949 Chevrolet 3100 Series 1/2 ton Pickup
1964 Chevrolet C10 (Ol' Yella) (SOLD)
1958 Chevrolet Biscayne 2 door (SOLD)
1970 VW Beetle
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