flat head ?

I see valves on the right head to shut off coolant to the heater would cause a hot spot?

 

No it was probably used in the summer to keep the extra heat out of the passenger compartment bypassing the heater core.

 

Yep that's what it's for and that's what I want to do, but don't want to cause any problems.

 

No problems...be just like not having a heater.

 

Last summer had some overheating problems one day on my old flathead and opened the valve for a little more cooling to the engine. It helped but got freaken hot in the cab. I haven't open the valve on the new FH and there is no flow or heat retrictions in that area of the head. As matter of fact the right head is generally a few degs cooler.

 

I turn mine off every spring with no problem.

 

Thanks guys thats the answer I was looking for