Radiator

[TheGuyWho]

So on my 2000 I would ask for a water pump for a 2000 nav instead..or is it year specific for the one you are talking about.

It doesn't matter. They're all the same…

 

[rburch]

I have found out that it depends on if you have the trailer tow package. The T.T.P has a HD radiator that has a thickness of 2 1/4 and the non T.T.P has a thickness of 1 1/16.

So im going to guess that the thinner one is a 2 core and the HD is a 3 core.

 

[tallsville]

as far as gauges go. they are so muted, it takes a big change to make them move, it helps most people cuz most if the saw the needle move most would get freaked out. remember most things are built to for lack of a better term make people feel safe/better/etc.

 

[BakerEdition]

Navigator Water pump

Without actually knowing for sure, I cant say. BUT I would assume/ or guess, that it could be bigger. Police vehicles are constantly running, with little to no break to allow them to cool off. Sometimes for 12+ hours straight! It would make sense if the radiator was upgraded, but then again, its Ford, and they are notorious for cutting the wrong corners. Unless when they ran tests they determined that what we have in our "street" trucks, was sufficient for SSV's as well.

My suggestion: If you're worried about it, upgrade it to an SVT radiator if you can find one. They're relatively cheap. Especially compared to some of the aftermarket options. And while you're in there, you might as well do a Navigator water pump and also a new thermostat.
E-fans are my next modification to complete the cooling system.

Just curious...why a Navigator water pump? why not one for the Expo?