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LS3 in a fourth gen - sensor adapter questions

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Old Oct 12, 2020 | 10:18 AM
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Default LS3 in a fourth gen - sensor adapter questions

Hi folks!

I'm putting a heads+cam LS3 in my '02 Z28. I've gathered nearly all the parts I need, including the cam sensor and knock sensor adapter harnesses from Racetronix. Can anyone tell me how these are supposed to be routed? Also, where should I attach the ground wires for the knock sensor harness? Photos would be most helpful, if you have them. Racetronix includes zero instructions with these products, unfortunately!

Thanks!
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Old Oct 12, 2020 | 12:04 PM
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Attach the ground lugs for knock sensors to the block near the sensors themselves, I had to do the same thing with Fitech harness extensions for gen4 5.3. Just look for the unused threaded hole near by, done. Route the wires from the rear of the engine around the rear corners of the block, over the starter on right side. The CMP routes from the rear of the block where your old sensor was to the front of your block either under your over your intake depending on the style of intake, secure your harnesses where ever you can.

Last edited by 64post; Oct 12, 2020 at 12:11 PM.
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