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Click here to return to the wiring harness overview! Click here to return to the GEN III, LS1, LS2, LS6 product overview! Click here to learn more about FAST FLASH Programmers! Click here to learn more about the LSX GEN III, LS1, LS2, LS6 Intake manifold! ZEX Nitrous for GEN III, LS1, LS2, LS6 -click here for more info! Click here to learn about the XFI fuel injection system!
FAST™ offers a top quality Perfect Circuit™ wiring harness for nearly every GEN III. Vortec engine application. Don't see your application listed here? Contact our expert EFI HELP™ technicians at 877-334-8355 for assistance!

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Complete history of GM's LS engines