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What size are the "barbs?" of the chevette heater core pn 399069?

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Heatercores don't really come barbed, you have to cut the existing pipes down and jbweld/solder the hose barbs you intend attach. You can plug the existing hole and make new ones on the back side of the tanks as well.
 
I see... is there a company that would be able to do something like this for me? Im not a handy man! ty...
 
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The fittings that come on chevette heatercores have a sinble barb on each. the smaller fitting is 1/2"od, and the larger one is 5/8"i think. You can stretch some 1/2"id tubing over them pretty easily, without soldering, or jbwelding. It is alot easier, then just add a hose clam and it will not come off!
 
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