Well the water pump housing does not have a recess for a restrictor plate. Nor does the t stat housing...
The engine builder says no t stat. The radiator company becool said to use one. Or a restrictor plate minimum. That the water moves through the engine too fast with out it.
So I decided to work backwards. I installed a GM t stat from a cutlass. 195*. It was like .005 too big for the hole in the water pump house. So I filed a few of the edges and crammed it in. Fits super right so it should not leak or fall out.
I started the car. Let it run. Burped the system. And let it run some more. Temp stayed at 190 the whole time.
So far so good.
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