Here is the second Hercules military engine converted to White tractor Hercules.
Actually this was a Continental. But they appear to be identical.
This one was more difficult as the cam gear was pressed on instead of threaded.
Seems to have a slight miss at low rpm when cold.
The first swap appears to have gained noticeable horsepower increase.
This engine now runs at 2500 rpm. We got the injector pump rebuilt and they set the pump up a bit. I think I will set the throttle stop down to 2200 or 2300 rpm.
Note: I'm having trouble replying to comments again. I'm back to using my phone.
I also have trouble keeping up with other people's blogs. I apologize. Im Too cheap to upgrade laptop.