What size radiator are you running? What temp thermostat?. My car always tended to run on the warm side (around 200 degrees while cruising and up to 215 degrees in traffic) Though all of the cooling system parts were visually ok,(but old),last summer I bit the bullet and replaced the water pump, put in a new 3 core radiator, a 50/50 coolant mix with the water wetter added in (it does work) and a new 160 degree thermostat (the car is summer driven only). After these changes the car runs @ 180 degrees consistiantly while cruising and has never topped 195 degrees in traffic, running the original 4 blade fan and a shroud. Also if your using the original factory temp gauge, you may want to consider adding a good after market gauge just to be sure that the reading is accurate.
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1965 K code coupe - numbers matching - restoration ongoing. 1987 LX notch, 5 spd, stock heads (minor porting) and intake, 65mmTB, 3.55's, ram air, pulleys, shorty's, 2.5" exhaust with cats 13.89@100.25
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