I have a 87 Cutlass with a 2000 GM 350 crate engine...Edelbrock 600cfm, Edelbrock intake, Schoenfeld headers with 3" exhaust no cats dual flowmasters, Lunati cam...Fast and Loud and Cool...Maybe too cool for it's own good, I'm not sure? Theres no fan connected to the engine just a 16" electric between the engine and the radiator that pulls air through when I turn it on...No thermostat in the engine and no relay to turn the fan on or off at a certain temp...My problem is that I can run the car without any fan and never go past 180F unless I'm at a stoplight...If I leave the fan on the temp will stay at 140, 150F...The RPO code V08 is the type of radiator I have...It's huge...But I heard that running your engine at too cool a temp can be detrimental to internal workings at high rpms...Is this true...I've always thought 180 - 190F to be optimum temp but I can only get there if I use no fan at all...Now I just turn the fan on in slow traffic and let the engine stay at 160F running with no fan at all