usually if you have no stat.. the car will actually tend to run warmer. Because the coolant is flowing to fast to let heat transfer... I have owned 4 diff mustangs ( all 5.0s) and never had 1 run cooler than 170... I like the 180* stat (lets the car warm up quicker)...

"Horsepower makes Heat".... thats your problem Vinny time to mod that fucker... :lo: you dont have enough HP to make it run warm enough...