Now , as the heads off I have the engine timed up ( crank locked with the bell housing tool ) will that be enough to hold it ?[/QUOTE
Not sure how strong the pins are but If it takes a 5 foot pole to move the pulley bolt that would be quite a bit of force, don't want to bust the pin or worse damage the bell housing.
Absolutely not! The locking pins and the holes they locate in are not designed to take that kind of load.Now , as the heads off I have the engine timed up ( crank locked with the bell housing tool ) will that be enough to hold it ?