News & Multimedia

GRAND-AM 101: The Daytona Prototype Class

The GRAND-AM Daytona Prototype category has attracted the attention of superstar drivers and universally recognized teams through its extremely raceable and relatively affordable format. With its
intelligent design, the class has revolutionized sports car racing with plentiful battles at the front of
the field and close finishes in virtually every race.

The DPs compete in the premier class of the GRAND-AM Rolex Sports Car Series. These are exotic, mid-engine machines that are purpose-built for competition. They are low to the ground and are
capable of speeds in excess of 185 mph. They also feature the latest in safety technology, including carbon-fiber side-impact panels and a multi-point roll cage with a unique center post at mid-windshield.

The rules were designed by GRAND-AM with the intention of containing costs while promoting close competition and driver safety. The class was introduced on the eve of the 2002 Rolex 24 At Daytona, and debuted at that event one year later. Chassis constructors Fabcar, Multimatic, Doran and Picchio fielded DPs in the inaugural 2003 season, with Riley, Crawford and Chase introducing models the following year.

After five years with only minor rule changes, DP constructors were allowed to update their designs or transfer their licenses for the 2008 season, ensuring the stability of the class. Lola (which purchased the Multimatic franchise), Dallara (Doran) and Coyote (Fabcar) purchased existing licenses and debuted cars, while Riley and Crawford presented updated versions.

Rule changes for the 2011 season included the use of the Assisted Gearshift System (AGS or paddle shift) transmissions for cars piloted by a Pro-Am driver, and a change in the size of the specified sideplates on the rear wings.

The 2012 season will see the introduction of the next generation of Daytona Prototypes, with revisions including a smaller driver compartment and OEM-branded DPs, such as the new Chevrolet Corvette Daytona Prototype. GRAND-AM is also studying engine packages with the possible introduction of turbocharged engines beginning with the 2013 season.

Although each chassis is designed and manufactured independently, competitor modifications are highly limited by GRANDAM rules. Certain parts, including series-standard rear wings, are mandated by the series. A DP chassis costs about $400,000, but the cars can be raced in their current configuration for several years within GRAND-AM’s stable rules package.

For instance, the original Riley chassis that debuted in 2004 continued to race competitively with updates in the Rolex Series – winning two races in 2008 – while Brumos Racing won two races in 2009 with the original version of the Riley chassis.

Manufacturers are welcome to submit any production-based engine for approval in the series. Engines that are approved for competition include power plants from Chevrolet (5-liter V-8), Lexus (5-liter V-8), BMW (5-liter V-8), Porsche (4-liter flat six and 5-liter V-8), Ford (5-liter V-8), Ferrari (4.5-liter V-6), Honda (3.8-liter V-6) and Infiniti (4.3-liter V-8). All engines are tuned to produce about 500 horsepower and each is capable of being mated to any of the approved DP chassis, which creates an interesting variety of chassis/engine combinations. DPs utilizing engines under 4.5 liters are allowed the advantage of the six-speed gearboxes, while all race cars with larger engines must run five speeds.

In addition to official and approved chassis designs and engines tuned to GRAND-AM specifications, DP competition is equalized further through minimum car weight. DPs with smaller engines can run at lighter minimum weights than their counterparts with more power. Cars fitted with engines less than 4 liters can weigh 2,200 pounds or more. DPs running engines 4 liters and up to the maximum 5 liters must weigh in at a minimum 2,250 pounds.

 

 

Show More Show Less
Now Viewing
GRAND-AM 101: The Daytona Prototype Class
 
GRAND-AM 101: The Daytona Prototype Class
The GRAND-AM Daytona Prototype category has attracted the attention of superstar drivers and universally recognized teams through its extremely raceable and relatively affordable format. With its intelligent design, the class has revolutionized sports car racing with plentiful battles at the front of the field and close finishes in virtually every race.
Read More
Related Media
Kyle Larson
 
Exciting New NASCAR Race Format Takes Center Stage in Both Races at IMS
NASCAR introduced stage racing at the start of the 2017 season to divide the race into segments, with additional championship and playoff points awarded to drivers running in the top 10 at the end of the first two stages. The new format has added intensity and more competition to earlier portions of races.
Read More
Brickyard 400
 
Brantley Gilbert Big Machine Brickyard 400 Fans Encouraged To Plan Ahead at IMS.com
Fans attending the 24th annual Brantley Gilbert Big Machine Brickyard 400 and sixth annual Lilly Diabetes 250 on July 21-23 at the Indianapolis Motor Speedway are encouraged to “Plan Your Visit” through an interactive web page that serves as a home base for those headed to the track during this exciting NASCAR race weekend.
Read More
Brickyard 400
 
#MyBrickyard: Jerry Kujala, Mountain Iron, Minnesota
The #MyBrickyard series features longtime ticket holders for the Brickyard 400, as they discuss what they enjoy about the NASCAR weekend at the Indianapolis Motor Speedway and why it has become an annual tradition for them. Some installments will feature first-person accounts; others will be in question-and-answer format.
Read More
Jeff Gordon
 
Rich History, Prestige of Brickyard 400 Featured in New Section of IMS Website
Fans can gear up for the 24th edition of the Brantley Gilbert Big Machine Brickyard 400 on July 21-23 at IMS by taking a virtual drive down memory lane at a new section of the IMS website, featuring the rich history, prestige and greatest moments from the first 23 years of the race, one of the crown jewels of NASCAR.
Read More
Denny Hamlin
 
Hamlin Shifts Focus to Brickyard after New Hampshire Win Relieves Pressure
Hamlin broke through with his long-awaited first victory of the season in the No. 18 FedEx Toyota fielded by Joe Gibbs Racing, holding off Kyle Larson by .509 of a second to win the Overton’s 301 on Sunday, July 16 at New Hampshire Motor Speedway.
Read More
Items 1 - 5 of 757
Reserve one of our hospitality suites for your next event!
To start planning your event at the Indianapolis Motor Speedway please fill out our Information Request Form or contact IMS Sales Department at (317) 492-8739 or email at hospitalitysales@brickyard.com.
Latest Tweets
It's Pole day on @CrownRoyal Armed Forces Weekend & we can't wait to see you! Check out details on the day: https://t.co/yKQ6Db3YRK
May 21