Working with a 1937 216 engine that I just installed as a replacement in my truck... Unfortunately, I got with no history with the engine (other than I was told it is good) Got it fired up, BUT I have an overheating problem... Water boils out from the overflow pipe around 190F- 200F.
I have checked the following...
1- Air trapped in the system in the rear (temp gauge boss)
2- Water pump belt tension
3- Radiator cap (R-3)
4- Coolant level
On the other hand, engine starts right up and there is no white smoke...
1- Checked all spark plugs and are clean/normal. Have not done a compression test yet...
Radiator was cleaned out and pressure tested...
Could the water pump impeller spin freely inside the housing? What am I missing? What should be the next thing to double check? Thank you.