Raylo

Yeah, we don't want to start using eBay as the definitive tehnical resource!

I think I was flashing back to a once upon a time discussion of LT1s. LT1s, of course, use an opitcal distributor, the good old Optispark. But when they went to OBDII they got a crankshaft position sensor and I sort of recall the discussion that it was just there for misfire detection (by comparing minute differences in crank position to some other timing reference) and to throw a code for OBDII. The reluctor wheel is supposedly mounted behind the harmonic balancer. So in this case the sensor wouldn't be purely redundant. I'm not 100% on this but that is my recollection. I remember being curious because my 1994 OBDI LT1 does not have a crank position sensor and there was no reluctor wheel when I pulled the balancer to do my cam job.

And all this has no relevance to the problem at hand.