Yes the wheels play a big part in speed especially on descent. If you have a high rate of descent and speed, the rate of change of temp in your big bore Continental is not going to like you. If you want to test the theory that there is no such thing of shock cooling, do it in your own aircraft. I doubt many owners will approve of your engine handling practices. If there is no such thing as shock cooling, then why is it that all the Continental piston engined jump ships that I know, never make TBO without pulling a cylinder?