Cam Sensor

GM LS7 hall effect crankshaft sensor as received...

Before I started...

First I had to decide where to put the triggering pin in the cam gear.  After brainstorming with Rocky, we decided that the best method would be to modify an 8mm cap screw and red Loctite it in...

        

After much debate and research, I decided that we should balance the cam gear.  Rather than make a fixture for it, we balanced the gear on the cam, so that effectively the gear also helps to compensate for the lobes that tend to be more predominate on one side than the other.

     

Now with the dimensions determined from the cam gear, I decided to place the sensor perpendicular to the case half and 2.133" from the cam centerline...

  

I spent hours on the manual mill making the bracket to hold the sensor (Plus a bit of time with hand files and emery cloth!)...

        

Some more shots of the bracket on the engine case...

        

        

Hall effect triggering "pin" is perfectly centered in hole...

This will create a trigger for the ECU almost halfway in between cylinder #2 firing and cylinder #1.

Just prior to final assembly of the engine, I sealed the cam sensor block to the engine case with Right Stuff.

        

Since I was not getting a clean signal, I found out that these sensors are sensitive to the angle they are mounted.  I researched the angle that GM has them at and slotted the mounting tab.  After re-clocking the sensor, it appears to be working great...