2004 Pontiac GTO For Sale

by Vivek Nayyar

Published: July 29th, 2026

This 2004 Pontiac GTO is an exceptionally clean, rare 40th Anniversary W40 Package muscle coupe showing 53,848 miles. Finished in striking Pulse Red over a pristine black leather interior, this rare anniversary edition is powered by a modified 5.7-liter LS1 V8 engine paired with a 6-speed manual transmission. Owned, garage-kept, and lovingly maintained for the past 20 years by its second owner, this 422 WHP coupe features top-tier valvetrain, intake, exhaust, and suspension upgrades. It is located in Brownsburg, Indiana.

Location: Brownsburg, Indiana/USA

Price: $20,000.00

Key Details

Make/Model: Pontiac GTO
Mileage: 53,848 miles
Engine: 5.7L LS1 V8
Transmission: 6-speed manual
Title: Clean

Condition

Excellent, long-term enthusiast ownership with 53,848 original miles (acquired at 13,000 miles)
Stored indoors and garage-kept throughout 20-year ownership period
Exterior condition rated 8/10 with minor age-appropriate scuffs; interior condition rated 9/10
Leather seats meticulously conditioned annually with Mother's leather care, keeping seams and leather tear-free
Fresh engine oil service completed in May 2026 and powered by a new Optima Red Top battery installed in February 2025
Functional climate control system with ice-cold air conditioning and strong heat

Performance Highlights

Powerful 5.7-liter LS1 V8 tuned by Joe6pt0 to 422 WHP
Landspeed Stage 3 ported 241 cylinder heads paired with a port-matched LS6 intake manifold and throttle body
FTI 230/236 performance camshaft, Comp 921 dual valve spring kit, Comp pushrods, and ATI underdrive pulley
Dynatech stainless steel headers with off-road mid-pipes feeding a Spintech cat-back exhaust with H-pipe
Sveede over-the-radiator (OTR) cold air intake, AMW oil catch can, LPE Walbro 255 fuel pump kit, and Green Top fuel injectors
Monster Stage 2 clutch (only 3,000 miles of use) with Tick clutch master cylinder and stainless steel bleed line
GMM short shifter with LSS for precise gear engagement
Rear differential built with 3.91 gears, Harrop diff cover, and GForce1320 major diff tuning kit
Pedders drag springs on factory shocks/struts, 2006-spec brakes with DBA 4000 slotted rotors, Hawk Ceramic Corvette-spec pads, and rolled rear fenders

Known Issues

Interior headliner is starting to sag slightly above the rear seats
Minor engine oil weep resulting in a few drops on the garage floor over a year's time

Upgrades & Features

ADR M-Classic alloy wheels wrapped in 275-series rear tires
Fitted with a black 2006 scooped hood and 2006 rear bumper cover accommodating the split dual exhaust
Lightly tinted 2005-spec taillights with clear backup lamp lenses
Aeroforce digital scan gauges and touchscreen Kenwood head unit installed in cabin
Built using ARP fasteners on all major mechanical upgrades

Additional Information

One of only 794 GTOs built in 2004 with the W40 40th Anniversary Package, and one of just 512 produced in a manual transmission
Sale includes the original factory Pulse Red non-scooped 2004 hood if preferred by the buyer over the black 2006 hood
Exhaust sound demonstration can be viewed on YouTube
Cold start video is available on YouTube
Detailed dyno post and tuning documentation can be found on LS1GTO
The seller notes that several other photos and videos are available upon request