[Tcoat]

Originally Posted by RZNT4R

When you have a car that starts and drives, and you do something on it, and once you're done it does not start and drive, always checks what you've done first before throwing parts at it.

with that said, the first and easiest step is to check for a forgotten ground wire. If you've got jumper cables just jump the battery negative terminal to the engine, see if it starts.

If it still clicks, confirm that the engine spins freely by rotating it a full turn with a ratchet on the crank bolt.

Starters are fundamentally simple devices: if the solenoid clicks, the motor should spin and drive the engine. If it's electrical needs are satisfied and what it's trying to turn isn't seized, it should crank, unless it can't interface with the flywheel. If the drive gear is hitting something before it's full stroke, be that an incorrectly installed something or the wrong something, that effectively stops the solenoid from snapping shut it's big high amp contact and engaging the actual drive motor.

This ^ Especially the bolded part since you changed the flywheel. There have been a couple of guys that installed them wrong and had the same symptoms.