Cam for Turbo Hot Vapor Motor

Hello All,
I am now a long time fan of Smokey Yunick. What a character!
I wish I had met him while he was alive.
Anyway, I have been reading up on his patents and now his books.
I am looking to learn more about his Hot Vapor Adiabatic Engine technology.
Still, I think I need to know more about the cam profile he used.
Anyone here have an idea what cam profile Smokey might have used?
Seems like a high lift negative overlap profile would be needed?
Is there any history on this anywhere?
Thanks,