345 vs 392IC

That isn't where that thing goes. Where you're trying to thread it is where the other hold down bolt for the t-stat housing goes. The threads are completely different. One is SAE and the other is NPT. That's like oil and water. Besides, you don't want to re-use that rusted out hose fitting anyway. I'd remove the temp sender and chuck the rest in the junk pile.
 
i know its rusted all to hell. but that niple is were the water hose from the waer pump goes, so what do i do wht that hose?? comes from top of pump.
i will be getting more pics as soon as i can. truck is at MIL place. thanks for the help. also i cant get the old sending unit out.
 
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I went back and looked at some of your earlier pics. It looks like I may have been wrong in my previous post about that hole being one of your hold down holes. Still, I'd take that piece into a plumbing store to see if I couldn't find a suitable replacement. The hose fitting is 5/8ths of an inch. So you're saying the hole that you're trying to thread it into is physically too small to for it to thread in?
 
correct. the original block is way to big to fit in the hole. i tried to remove the temp sender and its is not budging. will prob need a new one. is this a special part? or can i pick it up from auto zone,napa, checker, oriely,etc???
 
That fitting was only used on 1980 Scout engines. I would ditch it and just run it like 1979 and earlier which used a thermostat housing and bypass hose.
 
I have found and bought the lower bypass housing. We're does the large elbow hose go to? I should have the part by sat. And hopefully at truck wed to install it.
 
Ok. I got the part. Set it on the intake, now I have to change the cover to the water pump. Anything I need to know before I tear my front end apart? Do I need anything to pull the pulleys off?
 

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Ok. I must be an idiot. None of the parts much up. Bolted the bypass on. The top neck that came with truck does not bolt up,only one of the 2 holes lines up. The top neck that came with my part motor is even more off. What am I doing wrong?
 

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Ok. Got the upper water neck figured out. Mil showed me lol. Amy ideas for the hose coming from bypass?
 
Now I see why this is so confusing. Every IH I have seen has a hose flange to match the bypass right where your 5/8" heater hose fitting is. I think you will be wanting a new water pump housing.

Also make sure the bleed hole in the bottom of the bypass housing is clear. And use only a Stant thermostat so the bypass is plugged when it opens.
 
Ok. How much of a pita is it too pull everything off to replace it. I have a water pump cover from a 392 from a medium duty. Can I use that?
 
Take the bolts out of your t-stat housing and then set the upper water neck in place and aligned with the holes that you have bolts going through now.
 
Ok. Huys, pretty much got everything buttoned up. Found a few things that I'm not sure on.

Found a tag on me front axle not sure if it's 4.11 or 3.73
Rear axle says 80 or 60 and c32055 any ideas?
 

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