Help with understanding alignment of 4x cam and 58x crank reluctor wheels and sensor

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Originally Posted by Highlander

Well... did you buy a kit from him? I am sure I remember he told me some of the specs when we were building my ls1/lt1 kit... but then again, I bought almost $4k in stuff from him. And I still do.

He does the 58x conversion to lt1s and sbc, so I am sure he figured it out.. but... it's something that took him a LOT of $ for him to give out free.... He is extremely knowledgeable and he builds harnesses that maybe gm has that level of quality.

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Actually, I had the first running LT1 that used his 24X kit, other than his test motors, so I guess I can also say that I have bought from him and still am also!! I have bought several harnesses from EFI Connection so I am aware of the quality that he sends out the door, second to none in my opinion!!!
As far as the $$$ outlay for R&D, trust me I know what it costs, my head isn't buried in the sand there, nothings free!!! I was not expecting anyone to give out info for free, never said I wanted it, never expected it. As I posted earlier, when I asked Mike, he said that he was not really 100% sure as it was a lot of trial and error to get a 58X system up and running. He was able to give me a picture of a big block with the 58 pulse reluctor wheel, so I was able to deduce how many teeth past the 2 missing the crank sensor is, that was the easy part!!! Finding out where the cam is is a different story, just finishing up another project so I can devote all my time to the Corvair motor, then I guess it will be trial and error for me also!!!
I just wanted to make it clear that I was not mutherfuckin anybody cause they wouldn't give out info..... that was not the intent of my post!!!!

Mike

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Originally Posted by ScarabEpic22

I havent seen EFIConnection do anything with the LL8s, not sure how much Mike has played with them (if at all).

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The LL8 uses the same cam/crank relationship as all the 58X LS style motors do....so the info is the same as the V8's!!!

Mike

If only someone with a high resolution (deep buffer) scope could take a 58x/4x waveform...

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Originally Posted by joecar

If only someone with a high resolution (deep buffer) scope could take a 58x/4x waveform...

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There is a guy near me that has a Pico 4 channel lab scope, that absolutely loves using it that I am going to try and contact and see if he could do that for me. Problem is, I do not own any 58X GM cars... my daily beaters are both Subaru's, and knowing their cam/crank relationship ain't going to do me/us any good!!! I was able to get a picture from an old fluke 98 graphing multimeter, but I am not sure that it will do any good either!!! Once I figure out how to post the pics, I will do so!!!
Again, I am trying to make this happen, gotten plenty of responses on the IATN web board for the 24X patterns, but no 58X yet.... the search goes on!!!
Hope these help, they are not the best....

Mike
Attachment 10247Attachment 10248
Mike

I'll check at Autonerdz.

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Originally Posted by schwoch1

Well, I hate to talk bad about Mike, but he did not know what the relationship was when I last asked him......
After a small amount of digging, it looks is if the missing notch is 14 teeth away from he crank sensor, now if I could figure out the cam that would help out 1000%!!!

Mike

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I know for a fact that the LS3 sitting in my shop is -14 teeth from the notch. I've verified visually using a dial caliper to find TDC and counting the teeth until I rotate back to find the notch. Nothing scientific - GM already did that work :) Now, I would LOVE to assume thats the case for the LL8 I6 and it uses the same decoding.

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Originally Posted by schwoch1

The LL8 uses the same cam/crank relationship as all the 58X LS style motors do....so the info is the same as the V8's!!!

Mike

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My fingers are crossed that this is true...

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Originally Posted by schwoch1

Actually, I had the first running LT1 that used his 24X kit, other than his test motors, so I guess I can also say that I have bought from him and still am also!! I have bought several harnesses from EFI Connection so I am aware of the quality that he sends out the door, second to none in my opinion!!!
As far as the $$$ outlay for R&D, trust me I know what it costs, my head isn't buried in the sand there, nothings free!!! I was not expecting anyone to give out info for free, never said I wanted it, never expected it. As I posted earlier, when I asked Mike, he said that he was not really 100% sure as it was a lot of trial and error to get a 58X system up and running. He was able to give me a picture of a big block with the 58 pulse reluctor wheel, so I was able to deduce how many teeth past the 2 missing the crank sensor is, that was the easy part!!! Finding out where the cam is is a different story, just finishing up another project so I can devote all my time to the Corvair motor, then I guess it will be trial and error for me also!!!
I just wanted to make it clear that I was not mutherfuckin anybody cause they wouldn't give out info..... that was not the intent of my post!!!!

Mike

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Well said... If EFI Mike wanted to chime in, he probably would have by now. He has too much time and money in R&D just to give it away and I completely respect that. His innovative ideas have led us to think outside the box - basically, this thread would not exist if it was not for that. Thank-you Mike!

Update: I have spark!! Cam sensor wires A and C were crossed. Still no injector signal....possibly VATS but I ran out of time again tonight. DVT injector diags pass.

Another odd issue I noticed is that my APP/ETC is no longer working after the LL8 OS flash. It previously worked on the original 12617449 OS / 12617448 CAL (not sure of the vehicle). Any ideas?

The pedal has to be from a factory LL8 truck, I have heard that with different OSs the ETC tables/outputs are different. If they dont match up, then the ETC wont work. I believe some go from 0-5v low to high and some are 0-5v high to low.