wow, its amazing the difference having a radiator thats not clogged up makes. my car runs about 165 on the highway now, and I have a 180 thermostat. I also have a single fan wired on all the time. tonight I went out and did some high speed runs. started at about 170 degrees, by about 3500 rpm in 5th, temp was climbing up, about 200-210, by about 4000 rpm, it was reaching 220, I went a little farther and it got to about 225, then it stopped pulling and I slowed down, and the temp started coming back down too, back to about 180. would wiring a toggle switch into the fan so I could turn it off at speed help any? or am I going to need a better radiator? or is it just the fact that the engine is running at high rpm for an extended period and I just wont be able to sustain those speeds for any length of time?

 

First of all I have no idea why you are running your fan all the time. It is really a waste of power from your charging system and drastically reduces thier life. 225 is really not that bad all things considered. How is your airdam? A high flow water pump may be one thing to consider. I ran into something interesting, don't know if it is relavent but I had a stock pump where the impeller was loose on the shaft. It is pressed on to the pump shaft and it was slipping on the shaft. If you are really pushing her and she stays around 220-225 you are really well within the safety range. As usual coolant mix, good pressure are all the common things to look for. A multi-core rad is also an option, depends on what you want to spend.

 

the fan was wired on all the time as a stop-gap a while back because we were trying to work out the cooling problems. we just ordered a new fan switch for it yesterday, so it wont be on all the time for much longer.

as far as the temps, yeah I know its not that bad, I was just curious as to whether there was a way to keep it down, I dont plan on running it at high speeds much right now. it was just something I noticed. the problem is there are no high-flow pumps made for the LT1. you can choose between stock or electric, thats it. I dont really see the need for the electric right now, maybe sometime down the road. the airdam still looks good, but I think its getting too flexible, its starting to flew back more and more, I may try getting a new one and see what happends, or maybe just bond a stiffener to the back of mine.

I also already have a 3 core radiator, but its a copper-brass one. once again, later on down the road I will probably get an aluminum aftermarket one.

thanks for the reply Danno, but like I said, this was really just a curiousity question, wanted to see what I could do.

 

ur not gonna need ur fan much past 35-40 mph...