1967 mustang coupe v8 289
got myself an infrared gun. after driving about 10 miles in 80 degree weather. 67 with 289, 24" aluminum 3 row rad. stock fan and shroud. hoses were around 180-200F, heads were about the same. top of manifold was 215-230, exhaust manifold was 380-close to 400 degrees. couldnt get a reading on the radiator itself because it was just reflecting the light. i'm pretty sure thats too high? radiator and thermostat are new. just installed it myself. what did i do wrong? how do i fix?