ProCharged LS2 GTO is Impressive Even at Idle

Stroked LS2 packs 850 wheel horsepower, making this one crazy-quick Pontiac GTO.

The Pontiac GTO that was sold in the United States from 2004 through 2006 never quite got the traction with the performance market that General Motors had hopes. After both the Firebird and Camaro was discontinued following the 2002 model year, the company rolled out the Holden Monaro rebadged as the rebirthed GTO for 2004 with the same LS1 that powered the previous GM muscle cars. Pontiac upped the ante in 2005 with the rollout of the LS2, but slow sales and the pending end of Pontiac led to the demise of the modern GTO in 2006, after just three years of production.

While the GTO didn’t sell as well as the company had hoped, it has proven to be a solid platform for a big-power build and one such car is current available in the LS1Tech Marketplace. Listed by “cucky4”, the Pontiac-badged Holden has been thoroughly upgraded to yield 850 rear wheel horsepower and with more tuning efforts, there is even more power left to be unlocked.

The Introduction

When the OP first posted his badass 2006 Pontiac GTO for sale, he offered up the following details.

Up for sale is my 2006 Pontiac GTO. This car has been extremely well taken care of since I’ve owned it with no expenses spared on the build. The list of modifications is long but this is the main things.

403ci LS2
F1R ProCharger on 16.5lbs of boost
Built T56 Magnum
Lonnies Double pumper fuel system with upgraded Walbro 450’s (2) and 130lb injectors
Flex fuel sensor
DSS 1000hp Driveshaft
DSS 1400hp axles
Vic Jr. Intake with elbow
Dart Pro heads
Custom 3″ Corsa catback paired with the ARH 1-7/8 headers and 3″ x-pipe

Car makes 850whp on E (not sure on ethanol content %) and 740whp on pump gas on a mustang dyno. Still has more in it but it’s on a safe tune and the blower still has more to give. Could easily be a 1000whp car but I drive it a lot and wanted to keep everything conservative and reliable. I’m asking $25.5k. Only trades I will entertain are for a boosted C6 plus cash on my end or a built C5.

Dreamy LS2 Build

Based on those brief details, this 2006 GTO has everything that you could want in a big-power LS2 build. The engine has been stroked from 364 to 403 cubic inches, topped with Dart Pro cylinder heads and, most importantly, a ProCharger F1R supercharger. It is a little strange that the seller doesn’t know what ratio of alcohol his car is tuned to run on, but on some sort of ethanol blend, this GTO made 850 rear wheel horsepower, while pump gas led to 740 rear wheel horsepower.

All of that power is sent to the wheels by means of a built T-56 manual transmission, a Driveshaft Shop 1,000-horsepower driveshaft and Driveshaft Shop 1,400-horsepower axles. There is no mention of any changes being made to the rear differential, but literally everything other aspect of the drivetrain has been beefed-up to handle the output of this built-and-blown LS2.

Listen to it Rumble

While the pictures and the modification list might sell you on this 2006 Pontiac GTO, the video below is the real “wow factor”. As you might expect, this stroked, supercharged LS2 with a full custom exhaust system sounds absolutely wicked at idle. Out back, we get the rumble of the exhaust and the lope of the camshaft, while the front view reveals the whine and whistle of the supercharger, so whether someone hears this car coming or going, it is going to get plenty of attention.

This 2006 Pontiac GTO might look fairly tame, but under the subtle skin is a monster engine that should allow this goat to eat just about anything that it comes across on the street and if you act quickly, this car could be yours. The Michigan-based owner listed it for $25,500 and has since lowered it by $1,000, so for $24,500, this wicked Pontiac muscle car could be yours.

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Patrick Rall

"Before I was old enough to walk, my dad was taking me to various types of racing events, from local drag racing to the Daytona 500," says Patrick Rall, a lifetime automotive expert, diehard Dodge fan, and respected auto journalist for over 10 years. "He owned a repair shop and had a variety of performance cars when I was young, but by the time I was 16, he was ready to build me my first drag car – a 1983 Dodge Mirada that ran low 12s. I spent 10 years traveling around the country, racing with my dad by my side. While we live in different areas of the country, my dad still drag races at 80 years old in the car that he built when I was 16 while I race other vehicles, including my 2017 Dodge Challenger SRT Hellcat and my 1972 Dodge Demon 340.

"Although I went to college for accounting, my time in my dad’s shop growing up allowed me the knowledge to spend time working as a mechanic before getting my accounting degree, at which point I worked in the office of a dealership group. While I was working in the accounting world, I continued racing and taking pictures of cars at the track. Over time, I began showing off those pictures online and that led to my writing.

"Ten years ago, I left the accounting world to become a full-time automotive writer and I am living proof that if you love what you do, you will never “work” a day in your life," adds Rall, who has clocked in time as an auto mechanic, longtime drag racer and now automotive journalist who contributes to nearly a dozen popular auto websites dedicated to fellow enthusiasts.

"I love covering the automotive industry and everything involved with the job. I was fortunate to turn my love of the automotive world into a hobby that led to an exciting career, with my past of working as a mechanic and as an accountant in the automotive world provides me with a unique perspective of the industry.

"My experience drag racing for more than 20 years coupled with a newfound interest in road racing over the past decade allows me to push performance cars to their limit, while my role as a horse stable manager gives me vast experience towing and hauling with all of the newest trucks on the market today.

"Being based on Detroit," says Rall, "I never miss the North American International Auto Show, the Woodward Dream Cruise and Roadkill Nights, along with spending plenty of time raising hell on Detroit's Woodward Avenue with the best muscle car crowd in the world.

Rall can be contacted at QuickMirada@Yahoo.com