There is a thing called an oil accumulator. I read about it in Fred Sissons book. I think it’s basically a small tank for oil that gets pressurized during operation. Then before you cold start you release the pressurized oil back to the engine.
https://www.cantonracingproducts.com/categories/accusump-oil-accumulator.htmlSounds like it will do what you want, but I’m not sure you need it - research them, many question the value of it all. Cool concept, though.
-N
‘66 plus 4