Hello, I have a 1991 LX with a rebuilt 347 stroker, and it keeps overheating. I run straight water with royal purple, (water wetter) but when I am sitting and idling, even even park the temperature keeps increasing. I run the hp efi system so I know the temperature is accurate, but it will stay cool enough if I keep moving, 40+ mph. I replaced the radiator since the old one was somewhat damaged, and it keeps it a little cooler, but not enough for me to feel comfortable. I am using an electronic fan since the radiator support was dented upwards and there’s no room for an engine driven fan. Is there something I’m missing? Is it just because it’s a high displacement v8? Anything helps, thanks.