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LS6 swapped to LS3 Corvette Wiring Harness?

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Old 04-22-2023, 08:13 AM
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Default LS6 swapped to LS3 Corvette Wiring Harness?

Hi all, I have a 2002 C5 Z06 M6 dedicated track car which means no: traction control, active handling, radio, heater etc, or ABS. My engine wiring harness is in shambles but works. Anyhow, I want to replace wiring harness. I do realize about the 58x and cam pos sensor and I believe MAF sensor on the LS3 crate engine with the add on wiring situation.
My question is where would be the best place to buy the closest thing to OEM harness as possible? I'm no wiring genius so plug and play is my speed. THX Brian.
Old 04-23-2023, 03:45 PM
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You might try Speartech. The reason I suggest them is that when we LS swapped a car buddies son's 89 Camaro I believe they sent the stock 89 engine compartment harness to Speartech. They modded it to incorporate the LS harness and AC stuff. Worth a shot.
Old 04-03-2024, 04:23 PM
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Why not get a complete used engine harness from a wrecked C5? Which PCM and engine block are you using?
Old 04-03-2024, 06:40 PM
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