• QUESTIONS? GIVE US A CALL! 1 (765) 378-4908

    Open Monday - Friday 9A-4:30P EST

  • Harness order lead time is estimated to be 7-9 weeks from date of purchase.

    All other items typically ship within 3-5 business days unless specified otherwise.

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Home > Gen V LT / Vortec Harnesses
LT4/8L90 Standalone Harness
LT4/8L90 Standalone Harness - Image 1 of 0
LT4/8L90 Standalone Harness - Video 2 of 1
LT4/8L90 Standalone Harness - Image 1 of 0
LT4/8L90 Standalone Harness - Video 2 of 1
LT4/8L90 Standalone Harness - Image 1 of 0
LT4/8L90 Standalone Harness - Video 2 of 1

LT4/8L90 Standalone Harness

$0.00
Choose your options:
Fuel System:
Sending in TCM for reprogramming?(required):
Add MAF Sensor?:
Add O2 Sensors?:
Add NSS?:
Gear Ratio/Tire(required):
Pedal Connector(required):
Cruise Control(optional):
Emissions Wiring(required):
Front End Drive(required):
Examples are Holley, Wegner, CVF Racing, Drive Junky, etc.
Product Code: Gen5LT4-8L90
Please see the 'Contact Info' section for current lead times on harnesses.
Call us at (765) 378-4908 to order.
Gen 5 LT4 / 8L90 standalone wiring harnesses are now available! Thinking about swapping the 650 HP Supercharged 6.2L engine into your project? Rest easy - we have your engine and transmission wiring covered!

Check out the video to see our wiring harness on our in house LT4/8L90 harness builder engine and transmission - just like every harness from Speartech, each LT4 harness will be built on this setup and test ran to ensure proper functionality before shipping!

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