2003 Chevy 6.0 LQ4 Vortec Engine with 4L80E Trans and Wiring – LS Swap Dropout – 41K Miles

LQ4 4L80E Dropout for Sale

This LQ4 4L80E dropout is a 2003 Chevy 6.0L V8 removed complete with the 4L80E automatic and wiring, with only 41K miles, ready for an LS swap.

2003 Chevy 6.0L LQ4 Vortec Engine with 4L80E Transmission and Wiring – LS Swap Dropout – 41K Miles
This 2003 Chevrolet 6.0L LQ4 Vortec V8 engine and 4L80E automatic transmission package is designed for truck replacements and LS swap projects requiring strong V8 performance and a heavy-duty transmission platform.
The LQ4 is part of GM’s LS-based engine family and features an iron engine block suited to applications where durability and torque are important. The 4L80E is an electronically controlled four-speed automatic transmission with overdrive, commonly used in truck and performance applications. Included wiring can help simplify installation, depending on the harness and electronic components supplied.
Compatible Chevrolet Applications
Silverado 2500HD and 3500
Suburban 2500
Express vans
Compatible C/K truck projects
Custom Chevrolet LS swap builds
Compatible GMC Applications
Sierra 2500HD and 3500
Yukon XL 2500
Savana vans
Compatible GMC C/K truck projects
Custom Sierra and classic GMC builds
Popular Swap Applications
Chevrolet C10 and square-body trucks
GMC classic pickups
Chevrolet and GMC performance trucks
Classic muscle cars and restomods
Street rods, hot rods, and custom builds
Off-road and high-torque truck projects
Engine and Transmission Highlights
Engine:
6.0L GM LQ4 Vortec V8
Model year:
2003
Mileage:
Approximately 41,000 miles, as listed
Transmission:
4L80E four-speed automatic with overdrive
Wiring:
Included; exact harness configuration should be confirmed
Engine block:
Cast iron
Ideal for:
Compatible replacements, LS swaps, and custom powertrain builds

About the LQ4 4L80E Dropout

In 2003 GM fitted the 6.0L LQ4 and 4L80E transmission to heavy-duty trucks and vans built to tow and haul. The iron-block LQ4 is famously tough, and the 4L80E is one of the strongest automatics GM produced. Having the wiring included with this LQ4 4L80E dropout makes the swap much easier, because the harness, sensors and connectors already match the engine and transmission.

Low mileage means more life left in both components, making this an excellent base for turbo builds, tow rigs and project trucks.

What to Plan For

• Computer tuning to remove VATS and set transmission behaviour.
• Space for the larger 4L80E case and a matching crossmember.
• An oil pan and headers that clear your steering and frame.

Installation Tips

Inspect the harness for damage, change fluids, replace the rear main seal and flush the transmission cooler lines.

FAQ

Can the LQ4 4L80E dropout handle a turbo? Yes, it is one of the most popular combinations for boosted LS builds.

Buying Your LQ4 4L80E Dropout from Auto Parts Export

Auto Parts Export is a Canadian supplier of used engines, transmissions and OEM replacement parts. Browse more Engine & Transmission Packages, or use our part finder if you need something specific. We ship across Canada and overseas, so read about shipping and international shipping, and review our warranty and returns policy before you order. For official model and specification information, visit the Chevrolet website.

How Ordering Works

Send us your VIN, engine code or part number and our team will check that the LQ4 4L80E Dropout matches your vehicle. We can share additional photos and any details we have on the unit, then provide a written quote that includes freight to your address, terminal or port. Large items such as engines and transmissions normally travel by freight on a pallet or in a crate, and we will explain the packaging, carrier and timing before you pay so there are no surprises when your order arrives.

Ready to order the LQ4 4L80E Dropout? Contact Auto Parts Export for pricing, extra photos and a shipping quote.

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