We got a bunch of silver motor paint back from Mike today. We use imron paint, and it works really well. It holds up to the heat and gas and is tough as nails. Check out the lifter blocks, they are all original and they all have different casting textures. This is a cool detail and it proves how inconsistent the sand casting facilities were back in the thirties and forties.
Here is one an oil pump for one of the 1940 knuckleheads we are doing in this batch of motors. Check out the parkerized nipples, this is a cool detail that no body notices