I have a 1984 Chevy S10 with a 4-speed. I have replaced the 4-speed with a automatic transmission.I kept the four speed radiator just added a transmission cooler in front of it. Now it wants to run about 200 degrees without a thermostat.Is this too hot if so do you think because I kept the 4 speed radiator? what should I do? Any help is greatly appreciate it thanks!