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1998 Hummer H1 HMCS (Wagon)

🔑 Key Details

• Year: 1998

• Model: H1 HMCS (Wagon)

• Condition: Used (Complete Frame-Off Restoration)

• Mileage: 3,500

• No. of Owners: 3

• Engine: P400 6.5L Humvee Crate Engine (New)

• Transmission: 4L80E 4-Speed Automatic (Rebuilt & Upgraded)

• Drivetrain: 4×4

• Fuel Type: Diesel

• Color: Custom Titanium Silver

🧰 Overview

An extreme, no-expense-spared, frame-off restoration of a 1998 Hummer H1 HMCS Wagon — meticulously rebuilt from the ground up with premium components, modern upgrades, and professional craftsmanship throughout. Virtually every system was refinished, replaced, or upgraded to create one of the most capable and refined H1 builds ever completed.

🦾 Chassis & Suspension

• Fully stripped to frame rails and crossmembers, blasted to SSPC-SP10 standard, then powder coated — every part refinished to perfection

• All structural bolts chemically stripped and yellow cadmium plated (not zinc)

• Non-structural bolts replaced with stainless steel

• New front and rear springs (fronts are heavy-duty plow springs to support hydraulic winch & brush guard)

• New front and rear shocks

• New upper/lower ball joints and tie rod ends (front and rear)

• Rubber Duck 4×4 PSC hydraulic steering system with remote reservoir for superior control

⚙️ Powertrain

• P400 6.5L Humvee Crate Engine (NEW – US Engine Production)

• P400 upgraded injection pump, marine injectors, and P400 turbocharger

• Heavy-duty lift pump, new ECM, and mechanical wastegate (Rubber Duck 4×4)

• 4″ Stainless Steel Exhaust System (Rubber Duck 4×4)

• Humvee Cooling Stack with P400 intercooler

• 4L80E Hummer H1 OEM 4-Speed Automatic Transmission – rebuilt and upgraded for the P400

• NP242 Transfer Case (resealed)

• Front and rear differentials (2.73 ratio OEM, NEW) with ARB Air Lockers (ModMafia)

• ARB Twin Compressor for lockers and trail use (NEW)

• Geared Hub Assemblies (1.92 ratio) rebuilt and upgraded to 12k spec

• ECV Half Shafts, stronger than 12k spec (same shafts all corners)

• ECV Wilwood Brake Upgrade front and rear (M1151/52 12” rotors with calipers)

• ECV Brake Booster from M1151/52 (NEW)

• 39.5” Super Swamper Iroks (NEW) on 12-bolt military M998 16.5” wheels with PVC beadlock inserts (Trailworthy Fab)

• Driveshafts rebuilt by Driveline Specialties Inc., Calgary

🛞 Body & Exterior

• Aluminum body stripped to bare metal, underside, hood underside, and bed deck lined in Line-X

• Spent 6 months at Western Paint (Calgary) for professional refinishing

• Finished in custom titanium silver (color code included in paperwork)

• Custom leather upholstery by Cascade Vans (Calgary): leather seats, leather passenger knee panel, black-stained OEM console, refinished dash pads

• Meticulously detailed and powder-coated interior and exterior trim components

🔊 Audio / Video / Electronics

All work performed by Simply Structured (Calgary) — one of the most comprehensive high-end audio installs ever done in an H1.

• Alpine iLX-207 head unit with backup camera and SiriusXM radio

• Two Audison Voce AV 5.1k amplifiers powering a full Audison Voce component system:

  • (4) 6.5″ drivers

  • (4) 3.0″ mids

  • (4) 1.1″ tweeters

  • (4) AV 2-way crossovers

• (4) Focal speaker pods for the 3.0″ + 1.1″ drivers

• (2) JL Audio 10TW3 subwoofers mounted under rear seats in custom enclosures

• Custom 6.5” driver enclosures (x4) and subwoofer enclosures (x2)

• Compustar T11 remote start, remote door control, and security system

• Ram Mount Police Console for overhead equipment, featuring additional 7” LCD display (always-on backup view or auto-on in reverse)

• Custom powder-coated aluminum roof-mount plate for auxiliary gear

🧾 Summary

This 1998 Hummer H1 HMCS Wagon has undergone a total frame-off rebuild to a level few custom off-road vehicles ever reach. Every component — from the cadmium-plated bolts to the P400 powertrain — was renewed or upgraded with top-tier materials and craftsmanship.

With just 3,500 miles since completion, this build blends military-grade durability with luxury, audio excellence, and bespoke finishing. A truly one-of-a-kind H1 restoration that delivers show quality, trail capability, and modern refinement in one incredible package.