Looking for the ultimate bulletproof powertrain for your restomod, muscle car, or heavy-duty project? This complete LS3 6.2L V8 engine and 4L80E automatic transmission package is dialed in, fully tested, and ready to drop into your chassis. Cranking out an aggressive 525 horsepower, this setup pairs legendary high-performance GM horsepower with one of the strongest, most reliable automatic transmissions ever built.
With only 35,000 original miles, this drivetrain combo is barely broken in. Instead of spending months chasing down individual components, buying from us means getting a complete turnkey solution that cuts down your build time and eliminates installation guesswork.
What’s Included in This Package:
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Complete LS3 6.2L Engine: 525 HP specification.
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Heavy-Duty 4L80E Transmission: Built to handle the massive 525 HP output with ease.
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Engine & Transmission Electronics: Matching ECU (Engine Control Unit) – flashed and ready to run.
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Complete Wiring Harness: Intact, clean, and uncut for a straightforward plug-and-play setup.
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All Engine Accessories: Includes alternator, power steering pump, water pump, and necessary brackets.
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1-Year Warranty: Drive with absolute peace of mind.
Why buy this setup? Sourcing a standalone engine is only half the battle. Getting a matching, low-mileage LS3 and a heavy-duty 4L80E transmission alongside the clean wiring harness, ECU, and all front-end accessories altogether guarantees a much smoother, cohesive swap that saves you thousands in extra parts
