1991 Hummer H1 CUSTOM LS SWAP!!

LS-SWAPPED, FULLY BUILT 4080E TRANSMISSION, NEW CUSTOM BUILT DRIVESHAFT

This 1991 Hummer H1 M998 is the kind of build that makes sense of an icon. Fully re-engineered for real-world driving, this isn't a parade Humvee or a novelty toy — it's a properly sorted machine that can actually live on the road and still deliver the presence you expect.

Engine: 6.0L Chevrolet LS V8 (swap)
Transmission: Fully built 4L80E automatic
Driveline: 4WD
Transfer Case: Rebuilt 3:1 ratio transfer case
Wheels/Tires: 37” Yokohama Mud Terrain tires

Exterior Options
LED lighting all around
Military-grade H1 body and stance
37” Yokohama MTs for serious off-road capability
Purpose-built, aggressive, unmistakable presence

Interior Options
Rearview camera
Functional, no-nonsense military layout
Built for durability and usability
Designed to match the truck's daily-drivable mission

Other / Mechanical Highlights
LS engine swap for modern reliability and power
Fully built 4L80E transmission designed to handle the torque
Rebuilt 3:1 transfer case
All new custom-built driveshaft
New CV axles throughout
Extensive mechanical restoration focused on drivability
Comfortable highway cruising — unlike most factory Humvees

This is the H1 done right. All the attitude, all the capability, and none of the misery that usually comes with dailying a military truck. If you want something raw, rare, and actually usable, this one deserves a closer look — reach out today and experience what a properly sorted H1 feels like.

*Although every attempt is made to ensure the accuracy of the date above, due to the possibility of human error, we cannot guarantee the accuracy of the displaced information, the availability of this vehicle, or the accuracy of its photo or stock photo. Such information may not reflect exact vehicle, colour, trim, options, price or other specifications. As a buyer we ask that you do your due diligence to make sure you do your own research before purchasing. Please contact Adrenalin Motors for verification or if you would like more information on this vehicle.