datZun

i had a read through a couple other discussions about something similar recently but can find the post. i have a 74 260Z and have purchased a 3 core aluminium radiator for it which i will soon put two fans on. the radiator i purchased has a perfect surface to put a thermo switch in the bottom tank. since its going to be cooler in the bottom tank, i thought it would use a 87/77 °C switch just to counter for the heat loss in the bottom tank. is this a good choice of range for the switch or is an 90/85 C a better choice. thankyou in advance.