This 1998 Chevrolet Tahoe is a 4WD example that was purchased by the current owner in 2012 with just 33k miles. Although the original Vortec V8 was intact, the decision was made to install a new LS9 crate engine from GM as well as the accompanying performance components to accommodate the supercharged 638 horsepower engine. A strengthened 1-ton 4-speed automatic transmission was added along with upgraded Baer brakes, Superlift lowering suspension, 35-spline Dana 60 rear end with Detroit Locker rear differential, upgraded cooling, custom traction bars, and much more. Work for the engine swap and the installation of its associated parts were performed by a Chevrolet dealership in Olympia, Washington in 2012 and 2013. The truck is now being offered by a dealer on behalf of the current owner with an extensive set of service records that document the build and a clean Washington title.

Finished in Light Pewter Metallic, this Tahoe retains a mostly stock appearance, though larger wheels were added to accommodate the upgraded brakes. The original owner had added sheepskin seat covers, running boards, and a bug deflector, which were removed before the engine swap and mechanical work were performed.

The suspension was lowered using Superlift components and custom sway bars, and custom traction bars were also added. Baer brakes use cross drilled and vented rotors measuring 14” in diameter up front and 13” in back. The new 20″ GMC alloys wear Goodyear Eagle LS-2 tires.

Inside the cabin, stock grey leather upholstery covers the power heated seats, and the truck was optioned with front and rear air conditioning.

An original Delco cassette head unit with additional CD player remains in place, while two buttons on the dash control the electronic 4-wheel drive shifting. The analog 6-digit odometer shows 34,886 miles, less than 2k of which were added by the current owner since the work was completed.

The 6.2-liter supercharged LS9 V8 is a hand-built crate engine from General Motors that was installed by the technicians at Titus Will Chevrolet of Olympia, Washington. Wicked Fabrication in Auburn, Washington provided the custom fabrication work and also serviced and tuned the truck throughout the first 1k miles of break in. Factory output numbers for the motor are 638 horsepower and 604 lb-ft of torque.

The engine retains its factory dry sump oiling system and is equipped with a Lingenfelter pulley and ECU kit, custom headers, and a full flow exhaust system. Spanky’s Rod Shop custom fuel injectors were installed, and a ZR1 fuel pump feeds a secondary Aeromotive fuel pump. Cooling is provided by an oversized Be Cool system, and a Spanky’s Rod Shop wiring harness and cruise control module are dealer serviceable as factory Corvette ZR1 electronics with GM plugs.

A GM performance front axle with 3.73 gears and bearings has been upgraded with Driveshaft Shop Level 5 half shafts and strengthened main caps. The 4L80E 4-speed automatic transmission has been strengthened and utilizes a Billet input shaft, performance shift kit, TCI Maximizer torque converter, TCI forged flexplate, and oversized transmission cooler.

Out back, a custom Dana 60 rear end features shot peened 3.73 R&P gearing, 35-spline axles, a Detroit Locker rear differential rated for 1000+ horsepower applications, and Billet aluminum main caps. The seller notes that the included service records document all of the work performed during the project and date back to 2012.

The video above has been provided by the seller.