DIY LTCC or similar system for LT1s

[spfautsch]

I have to confirm also why the crank times are so long.

I would postulate that crank times are long because the ecu wants to see a steady rpm signal on the low res rising edge.

Also, if I had to guess I'd say it wants to see the same sequence (in addition to steady rpm) for two full cam revolutions (four crank revs) before it wants to consider the data good. As I've mentioned, getting a steady cranking rpm can be problematic with an engine that has cold oil, good compression, and a less than optimal battery.

Looking at the time intervals, there's not a huge difference between the indexed cylinders so just looking at it from my perspective I think they wanted to be "really sure".

#4 - 15.5% (14/90)
#6 - 26.6% (24/90)
#7 - 37.7% (34/90)
#1 - 48.8% (44/90)

Did any one tried to replace some of these inside the sensor.

I have one that I killed by beating the hub out of the distributor body without removing the pickup. I can try opening it up and see what discrete componentry might be inside.