over heating and pressure in cooling system

[RonD]

Well if it will continue to be a daily driver then you would be better off staying with 3.0l.

Ford has put 10 Million 3.0l Vulcan engines on the road, 500,000 per year for 20+ years.

So used engines in good shape are not hard to come by.
And since you have the accessories(A/C, PS, Alt), intake, oil pan and exhaust for Ranger you can use the long block from any vehicle with a 3.0l Vulcan, Taurus, Tempo, Probe, and the Vans, sable and topaz as well.
Or rebuild, read here: http://www.therangerstation.com/tech_library/3_0-build.shtml

V8 conversion can be reliable but..............depends on how much money you are willing to spend on it.

 

[Rearanger]

When the water temp is above 220 degrees it turns into steam.

My 50/50 mix is 265F boiling.

 

[BTlilred]

I was leaning more twards the 3.0 more because of that reason, and how quickly I'd be able to get it back on the road. Then buy a cheap early 90s ranger that I can break on Sunday and still have a way to work on monday