Frustrating as hell

[Jerry93Z]

Last night I started digging my way to the opti...everything went smoothly until I got to the balancer/crank pully and the bolts that were in the pully do not have a long enough shank length to fit through my puller and into the pully.

Sooo...my question to all you knowledgable guys and gals is: Does anyone know the thread size and pitch of the tapped holes on the pully????

[jaysz2893]

The tapped holes are in the hub adapter that is on the crank. The crank pulley slips on. I use a 3 jaw puller, but it is hard with the radiator in there. careful tapping with a hammer should get it loose. Spray the center of the pulley with some penetrating oil.It is probally just rusted on. Keep an eye on the postion of the arrow on the pulley to make sure it goes back in the same way. 1993 didnt have the extra threaded holes in the pulley, 96+ did.. Here is a good diagram:
engine_front_diagram.jpg

[Jerry93Z]

The tapped holes are in the hub adapter that is on the crank. The crank pulley slips on. I use a 3 jaw puller, but it is hard with the radiator in there. careful tapping with a hammer should get it loose. Spray the center of the pulley with some penetrating oil.It is probally just rusted on. Keep an eye on the postion of the arrow on the pulley to make sure it goes back in the same way. 1993 didnt have the extra threaded holes in the pulley, 96+ did.. Here is a good diagram:
engine_front_diagram.jpg

So now I need to figure out if this is a later model engine or if it's just a late model pully, because I have the three holes for use of a conventional balancer puller..... If its a late model LT1 then the opti I have will not work. Oh brother....

[Jerry93Z]

Scratch my previous; that print is showing the holes I am asking about on the pully.

Edit: so what I did was I removed the bolts that hold the hub on.