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Re: What size heater hoses for 58 with Deluxe heat
Quote:
Originally Posted by 62lwbc10
Hey TIm thanks thats what someone else told me but both fittings at the heater core are 5/8" What gives?
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Probably an aftermarket heater core that works but isn't quite like the original one. Most likely you will have to change the nipple that goes on the waterpump out for one that is for a 5/8 hose and be done with it.
Most all GM anything that I have worked on have the 5/8 hose from the engine to the heater and the 3/4 running from the heater to the water pump or to the radiator in some cases.
Back to the original question I think that both fittings are 1/2 npt in the intake and in the water pump. The one in the waterpump could be 3/4 but I don't think it is and I'm at work so I can't check one of mine to find out.
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