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Old Oct 20, 2017 | 07:38 PM
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Default Need help LS3 swap

I'm currently doing an LS3 swap on my '04 corvette. I'm About 90% complete with the project but it looks like I've ran into a couple of sensor/electrical issues...I have a cam sensor that is currently reading 10 volts vs the correct 5 volts that it should read. So im looking at two things now, I either have and incorrect/faulty sensor or a faulty aftermarket cam sensor extension harness that I purchased from Casper Electronics. I have heard from a couple shops around Houston that my problem most likely is do to the fact that I need to switch wires A and C from the cam harness in order for the PCM to read the proper volatage. My question to you guys. Which cam sensor do I need to use for my application? an ls1 or ls3 cam sensor? or is there even a difference? and lastly, Have any of you guys had luck with simply changing wires A and b on the cam harness?

Also, I do have the correct cam gear(verified with engine builder)
and I did not use the lingenfelter converter box because I had a machine shop switch out a the 58x reluctor wheel to a 24x reluctor on the crank to make my ls3 work with my PCM.

Any help would be greatly appreciated!
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Old Oct 20, 2017 | 08:02 PM
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Old Oct 23, 2017 | 09:59 AM
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Its been a few years ago when I did LS3 swap. I went with Lingenfelter box. But when I did research back then, if you're not the Lingenfelter box, you need use LS2 cam sensor and 1X cam gear.
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Old Oct 23, 2017 | 11:51 AM
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Originally Posted by robmiz
Its been a few years ago when I did LS3 swap. I went with Lingenfelter box. But when I did research back then, if you're not the Lingenfelter box, you need use LS2 cam sensor and 1X cam gear.
Awesome! I do currently have both those iteams in my engine. Do you know if all I need to do is to switch wires A and C on the cam harness?
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Old Oct 23, 2017 | 02:03 PM
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Originally Posted by jaoviedo
Awesome! I do currently have both those iteams in my engine. Do you know if all I need to do is to switch wires A and C on the cam harness?
I don't recall a need to swap wires.
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