Good for you then. You are defiantly in the minority of Tiger owners. I would verify though. Get a laser temp gun and check the thermostat housing and some of the hoses once you are up to temp to see if it matches your gauge.
My issue was NOT high coolant temps but high engine compartment air temps caused the IAT for the engine to get high and the A/F mixture to go rich. Watched it live, real time on the wide band O2 gauge. I have never had any coolant issue with the 347 and it rarely goes over 180. Not the case when the 260 was installed.
A 347 full roller engine with aluminum heads and intake will run cooler than a 260 no matter the HP the 347 is developing. A full roller engine has much less friction and the aluminum conducts heat much better.
Thanks, Duke. One reason I love this place is because I learn stuff here!
That would be a good experiment for me- the laser temp gun. My engine compartment temps may very well be higher than I would like to think.