A socket no more than 2" tall is a little easier to use than a deep/injector socket, particularly if you have an 11 blade fan

Is 1/2" drive small enough? Do you mean big enough? You're not going to find a 3/8" drive 27mm/1-1/16" socket anytime soon. I have no problem spinning the engine with a 12" ratchet and I'm not strong in any sense of the word. And yes, my engine has decent compression

Sixto
87 300D