Yes, all 3 tie rods under the pan must be dropped, but other than that I don't believe the engine must be
raised. The back of the pan must be lowered enough to shine a flashlight on the crank weights, so that the pan can be pulled back slowly, You must rotate the engine pulley in front a 1/4 turn and then look again under the
car to see if the front weight has moved enough. I did this alone, but it is easier if some one else turns over
the motor as you look at the crankshaft and pull the pan back. It took me three trips from under the car to get
the weights just right for the pan to clear and come off. If you don't rotate the pulley after that, the pan will go
right up and to the block when you want to put it back.