Case question for possible location for crank trigger Options

[technicalninja]

What was the original use for the large hole on the flywheel side of the right (passenger) engine case?

Looks like it could have been a good flywheel lock location.

To me it looks like very good spot for a crankshaft position sensor...

What was its original reason for being there?

[technicalninja]

One of the real early uses of coil on plug!

We had shitloads of trouble out of those early all-in-one coil packs with the ignitors built into the base in the "normal" repair world.

The Cadillac Northstars used two of those and we had lots of trouble with those as well.

Both the Quad4 and the Northstar were wonderful designs that GMs quality control doomed from the start.

Right about the time they got them "de-bugged" they cancelled them!

What a waste...

So, only 6 slots +1 and you already had the angles indexed.

My hats off to you Sir!

That was a pretty good system to start with. The GM ECUs are way overbuilt, and they use 15% of their total computing power to run an engine.

Sounds a lot like how the human brain works...

The truck coils (01 and up) are the "budget" ticket for COP now. The junkyard used coils are better than what's available in the new aftermarket.

I will be using the IGN1A coils here.
https://www.diyautotune.com/product/ign-1a-race-coil/

These puppies can arc weld.

I really like the cam sensor set up that the dubshop has.

https://thedubshop.com/mini-cam-sync/

Too bad the're sold out right now.