to be or not to be? a thermostat question

I actually ran the water pump and the plastic fan with that little motor and had no problems in the middle of the summer on 90 degree days but with that said it was a low compression 318. My plan is to now just run the water pump with it and I have two electric fans for the radiator with the new stroker motor. I thought when I read about it the stock gearing was for the Moroso setup was 2600 rpms? I got the dual fan set up from a member that said it came from a 440 Motorhome he was a nice guy and did a great job getting them to me at a very reasonable price.