Strokers run warmer???

Ok, a stroker with more volume will have the potential to make more heat (more volume = more power = more heat).

I thought that the thermostat controls the temperature of the engine. The same thermostat fits all v-8's from 273 to 440. As long as the cooling system can handle the amount of heat rejected from the engine, the thermostat sets the running temp. That should eliminate the engine as the determining factor if the same thermostat can control a stock 273 2 bbl and a 440 six pack...

The issue is, does the cooling system have the capacity to reject heat to keep up with the rate that the engine generates it. For those saying that they took out a worn out 360 and put in a new stroker and it ran hot, there are too many variables to just say it is the "stroker" that is causing the imbalance in heat transfer. The old worn out engine has reduced power due to being worn out, therefore, it is not making/rejecting as much heat as it did when it was new. If you took out that used 360 and put in a new identical 360, it may have also caused it to run hotter in that car than the old engine because the engine is new and efficient and can generate more heat than the old worn out one. In this case, the cooling system has deteriorated in its capacity and was able to keep up with the old engine, but now can't keep up with the new one. It's not from adding cubic inches, it's from going from an old worn out engine to a new efficient one.

Heat output of an engine is directly related to the horsepower. The more horsepower you make, the more heat you generate. As you make more horsepower, you have to increase the capacity of your cooling system.

As far as the heat generated from the friction due to the "extra stroke", it is very small compared to the heat generated during the combustion cycle. It's like trying to raise the water level of the ocean by pissing in it.... Too small to make a difference.