Detailed Car Specs

Drivers of ChoirBoy

Year Driver
2020 Helgi Garðarsson
Finnur Aðalbjörnsson
2019 Þór Þormar Pálsson
Atli Jamil
Guðmundur Elíasson
2018 Þór Þormar Pálsson
2017 Þór Þormar Pálsson
2016 Snorri Þór Árnason
2015 Snorri Þór Árnason
Árni Steindór Sveinsson
2014 Snorri Þór Árnason
2013 Snorri Þór Árnason
2012 Dagbjartur Jónsson
2011 Dagbjartur Jónsson
2010 Jón Örn Ingileifsson
2009 Jón Örn Ingileifsson
2008 Jón Örn Ingileifsson
2004 Haraldur Pétursson
2003 Haraldur Pétursson
2002 Haraldur Pétursson
2001 Haraldur Pétursson
2000 Haraldur Pétursson
1999 Haraldur Pétursson

Detailed description of ChoirBoy

The Car
Name of Car ChoirBoy (Kórdrengurinn)
Built by Haraldur Pétursson along with his team
Year Built 1998
Weight 1190 kg
Length 2750 mm
Width (Front) 2300 mm
Width (Rear) 2260 mm
Chassis Tubular frame made from 48 x 2,6mm E355-N tubes and 48x4
Type of Engine LSX 427
Horsepower 810 hp @ 7800 RPM
Turbo / NOS 150 - 300 hp NOS
Block RHS Aluminum talldeck race block
Piston Diamond custom pistons 4.123" bore 13,5 compression
Cylinder Heads All Pro LSW 12-4 Hurricane
Intake Manifold Franenstein Billet Aluminum LS 7
Camshaft Comp Cams
Crankshaft Callies Magnum 4" Stroke
Connecting Rods Callies Ultra
Injection System Holley Terminator X Max
Engine Builder Nelson Racing Engines & Borowski Engines
Torque 635 lb/ft @ 6200 RPM
Fuel C16
Type of Transmission Powerflide FTI Pro5 1500 hp
Input Shaft Vasco
Clutch Drum 8 clutch
Converter Stall 5000 RPM Stall
Gears 2
Transfer Case
Type of Transfer Case Ljonstadir Special
Axels Front Axle Rear Axle
Housing 9" Ford 9" Ford
Axles Man 35 spline Chromoly
Differential Ratio 4.55 4.88
Case Aluminum Case Aluminum Case
Locker Spool Spool
Knuckles Man
Joints Man
Steering Ratio 55°
Suspension Front Rear
Shocks Fox 2" x 10" Fox 2" x 10"
Trailing Arm 4 - Link 4 - Link
Type of tire Bigger Digger / Super Scooper
Tire Size 32 / 16-15"
Type of Wheel Weld Racing / Reel Racing
Wheel Size 15 x 14"
Brake Caliper Wilwood
Brake Pads Wilwood
Brake Discs Suzuki Vitara


Previous Owners

1999 – 2008 | Haraldur Pétursson [Musso]
2008 – 2010 | Jón Örn Ingileifsson [Choir Boy]
2010 – 2012 | Dagbjartur Jónsson [The Saint]
2012 – 2013 | Róbert Agnarsson
2013 – 2016 | Snorri Þór Árnason [Choir Boy]
2017 – 2020 | Þór Þormar Pálsson [THOR]
2020 – today | Snorri Þór Árnason [Choir Boy]

Titles Won
Icelandic Champion
NEZ Champion
USA Champion

Haraldur Péturson among his trusted team began building the car in November 1998. Davíð Ólafsson was the one that designed and drew up the roll cage. The process didn’t go as smoothly as they hoped. It took them a few tries to get the cage like they wanted to have it but at the end they were satisfied. 

At that time this build was considered revolutionary and different from the other Formula Offroad vehicles. First of all the car would be 900 kg (1984 lbs) or 600 – 700 kg (1323 – 1543 lbs) lighter than their opponents.

They put a V6 Nascar race engine that gave them 425 hp @ 6000 RPM without any NOS. Former crew member Benedikt Eiríksson was the one that took care of the engine. That engine was 100 kg (220 lbs) lighter than lightest engines in the league.

The suspension is made of home-made struts that Davíð built with the help of Renniverkstæði Exa, and had the travel of 30 cm (12″). The vehicle had also an independent front suspension system. With the IFS the kicks would be softer and smoother.

In 2008 Jón Örn Ingileifsson bought the car from Haraldur.  While the car was in his possession, Jón Örn changed the name from “Musso” to “Choir Boy” and replaced the V6 engine with 377Chevy V8 and removed the home-made struts and put 12″ FOX shocks underneath it. 

Snorri bought the car without the 377 Chevy engine only a month before the first race of that season. He and his team tore everything apart, painted then put the car back together to attend the first round. In his possession the car had LS3 GM 427 7L engine. Snorri also upgraded the brake system.

Þór Þormar Pálsson

Þór Þormar and his father went to Formula Off Road competitions together so the interest has been there for many years. First he had a normal every-day jeep but buys a Street Legal car from Hafliði Guðjóns, probably the last manual Formula Off Road car. After that he bought the frame of Fríða Grace, prepared the car for a race in 1995, he competed for the next 1-2 years on that car. Still he lacked money and experience  so this whole thing would work as it should so he and Elmar Jón Guðmundsson bought Heimasætan together. Þór and Elmar both competed on Heimasætan for few year and all was well, but then Þór borrows Hlébarðinn from Eyjólfi Skúla, which later on he bought for his own and goes by the name Mjölnir.

Guðmundur Elíasson

Guðmundur has been competing in Rallycross since he was 15 years old. Elías (his father) got him a Honda to race in and in that first race he won. The fuel runs deep in his veins seeing as he hasn’t stopped racing since then. He has been competing in Rallycross where he battles for the 1st place each and every time he sits behind the wheel. Today he still races in Rallycross in the 2000cc class on a “Bonda”. BMW body with Honda engine.

Guðmundur had never really watched Icelandic Formula Offroad until his father competed in 2017. After a great season Elías unfortunately injured himself and wasn’t able to race in the 2018 season so he handed Guðmundur the gloves and put him under the wheel to try and tame the 800HP machine.  Fortunately for Guðmundur he had just gotten his driver’s license and was therefore had become of age to race in Formula Offroad.

In 2019 Guðmundur borrowed the Icelandic Champion car “THOR” for a race in Skien, Norway in September that year. Guðmundur managed to get the 1st place on the first day of the race and 4th on the second day! Great achievement for him! 

Snorri Þór Árnason

Snorri Þór Árnason has been interested in Formula Offroad ever since he was a little boy. His father, Árni Steindór Sveinsson was on Haraldur’s service team back in the day. 

He bought the car from Róbert Agnarsson (who never raced on it) in 2013.  He competed on the car from 2013 – 2016 and won the Icelandic Championship all the years he competed. To gather all titles under his belt he raced in the 2016 NEZ Cup in Skien Norway and won his first NEZ Champion title!  He also competed in the first Icelandic Formula Offroad in USA in 2016 where he was crowned the USA Champ in Formula Offroad! 

He was also chosen ad “Driver of the Year” in 2015

After the 2016 season he sold the car to Þór Þormar Pálsson

Since departing from Formula Offroad, Snorri has tried out Drifting on his Supra with LS6 Turbo, he competed in the first eRally in Iceland and was the first Icelander to participate in the Southern Rock Racing Series where he drove the car “Warfare” in Bikini Bottoms Off-Road Park in Dyersburg, Tennessee. (Where the USA race is held)

Dagbjartur Jónsson

Jón Örn Ingileifsson

Jón Örn Ingileifsson began his Formula Offroad career in 2008 when he bought “Musso” or as he named the car “Choir Boy”. He had bought the car the evening before the first race of the 2008 season. He got it around dinnertime then raced it on Hella the very following day! 

 His interest in the sport was planted long time ago, for he grew up amongst the roaring cars and in the midst of talented drivers, seeing as his uncle is no other than multi – Icelandic Champion, Gísli G Jónsson

He did, however, make a huge name for himself as his Formula Offroad career took off. He drove that car for 3 years with great success. He won the NEZ Cup in 2009 and the Icelandic Championship in 2010.  He was also chosen as “Driver of the Year” in 2010.

Haraldur Pétursson

Haraldur started racing back in 1994 on the car “Kjörísbíllinn”

“Driver of the Year” in 2002

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