LS1 Timming Pickup?
 

What does the LS1 engine use for it's Crankshaft Sensor/timming?

Re: LS1 Timming Pickup?
 

Ummm...there's a crank shaft position sensor. Is that what you're refering to? Usually, when you do internal motor work and replace pistons, rods, and crank, you need to do a re-learn procedure with a scanner like EFILive or HPT or a Tech-II so the computer knows where each cylinder is at.