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Heater Hose Question - SB With Short Water Pump

5795 Views 9 Replies 5 Participants Last post by  elco68
Guys, I'm swapping a 350 into my 64 C10 pickup. I have a short water pump, and all of the associated brackets and pulleys are installed. The only problem I have is with the heater hoses. The truck has two hoses, one 3/4" and one 5/8". The 5/8" hose I have connected to a fitting on the intake manifold, no problem. The 3/4" hose, however, is supposed to go to the water pump as far as I know. The only fitting I can find with a nipple big enough for a 3/4" hose won't screw into the water pump. The threads are right, but the threaded hole in the pump is so close to the casting of the pump that you can only screw in about two threads before the hex portion of the fitting bottoms out against the pump casting. Is there some special sort of fitting required for a short water pump? I feel like I must be missing something.
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On mine,came that way so left it.Has a regular pipe thread and about an inch of nontapped pipe then thread end.With the hose attached to the end.More of a 2" or so pipe male union.Doesn't have way to put a wrench on.Would have to put union in vice and tighten with the pump.Way I put back on.
Looked like something you could get at homedepot or plumbing place for waterheater or something.Haven't seen it leak.Hose would attach to threads instead of ribbed area.And then hose clamp.
Looked to be just a 3 or 4" piece of pipe threaded on each end.If your pump is allready on,could tighten with strap wrench or use a double nut on end to tighten,where one nut locks the other down.Then use regular wrench on end nut.
Looks like I need one to now.Have an edelbrock pump on mine,so its not totally original.Thanks ya'll.
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