This is the last thing to be done before installing the engine in the car. You could potentially install the engine in the car and then install the transmission but this will undoubtedly be more difficult.

Notes:

• Torque is really important, especially on the flywheel and harmonic balancer.
• Be careful of intertia of an engine on a crane, it's basically a potential wrecking ball.
• Installing the Torque Converter in the Transmission correctly is important.
• Using a Transmission Jack makes this much easier.