Have a 79 F150 with 351M. I have tried all day to remove the harmonic balancer/crankshaft balancer. I have the large outside nut off, but cannot remove the rest. Used impact wrench, crowbar, big hammer....any suggestions? Email any help (and I need a lot of that) to marym408@hotmail.com. My wife's email address, she reads it all the time. thanks

Go to Auto Zone or Advance and put a deposit down on a puller. It is a tight fit on the crankshaft.