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Re: Heater Hose Fitting thread size on Edelbrock # 2101 intake
Generally the heater flow is from the intake to the heater then back to either the radiator OR the water pump. The inlet hose to the heater is 5/8" hose and the outlet from the heater is 3/4" hose. Thusly the hose nipple on the intake would be 5/8" and on the water pump is 3/4".
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