Hey fellas, long time wrench turner here. Picked up a 64 Custom (58k original miles) from grandson of original owner. Car sat covered since ‘92. Installed new battery, water pump, pertronix ign, new fuel tank, Gottafish rebuilt 4100 (fairlane), swapped the 2bbl intake for a 64 date code 4bbl, installed Leed power disc setup and new tires and rims. Been driving mostly summer time for over a year. But 289 NEVER heats up , temp wise. Lower hose is at 90 Deg, no bubbles in radiator, upper will be 125 ish with heater core hoses same. This is after a 40 min drive or a long warmup. Got me stumped. 195 deg t-stat installed but my laser temp reader isn’t picking anything up close to that. What am I overlooking?