Heater Hose Fitting thread size on Edelbrock # 2101 intake
 

Any of you guys running and Edelbrock 2101 instake manifold and what is the thread size of heater hose fitting you are using? 5/8" or 3/4". Just another thing that was not on the truck when I bought. Can I use the same thread size of water pump as well? Excuse what might see like stupid questions but, it has been a long time since I even had to think about these issues

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".

Re: Heater Hose Fitting thread size on Edelbrock # 2101 intake
 

Thanks Bud. I need to add that to my wish list @ Classic Parts. I should just go to the pick and pull and pirate them but, some things you just have to by new.........

Re: Heater Hose Fitting thread size on Edelbrock # 2101 intake
 

they generally use 1/2 NPT which its close to a .75 hole, but its a tapered tap. i know when i still had my heater, the fitting on the intake and on the water pump were both 1/2NPT but the bungs were 3/4 and the other was 5/8