New LS1 Owners - Newbie Tech - ls1 stock crank pulley install

Hi, I just took out the crank pulley on my 99 ls1 and was wondering when i put it back on do i need to put it back in a certain way or does it just go in the way i took it off? I'm curious because there are no crank key slot like the other cars i worked with. Please help

It just goes back on.

Crank Pulley just goes back on.

Next time try a search :)

Thanks