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?
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 guys did some more work on the truck. Found a few parts thst I need. Throttle return spring, bad hose from intake to brake booster (the one from my 345 intake is to small for the 392 intake), and one more port I'm. It sure what it is.