Manually cranking 1940 Ford V8 /engine in car?

[40 Deluxe]

Originally Posted by A bones

Sorry I didn't get here sooner. To turn an engine, with out crank access, jack one rear tire up off the ground. Easier of course without plugs. Place trans in gear (low for ease, high for more movement). The elevated tire is now your crank. Good Luck

Forgot to mention wheel chocks, and o'course hand brake released.

Actually, it's the opposite. Put the trans in high gear for easier turning and less movement. In low gear the engine turns roughly 3 turns for one turn of the driveshaft. So if you use the wheel to turn the driveshaft one turn, you will have turned the engine 3 turns (with great effort).