However, in 2006 air restrictors (as well as rev limiters) were used by Scuderia Toro Rosso to facilitate the transition to a new engine formula. Plate racing has drawn plenty of criticism over the years, mostly from drivers and team owners who prefer cars not be bunched together in two- and three-wide packs at nearly 200 mph and where the slightest contact creates a chain reaction and often mangles a bunch of $300,000 cars. The wreck sent debris into the stands including a tire and engine parts. After the tests were successful, the rules package was imposed for the 2017 race at Indianapolis. This suit serves a dual purpose of identifying the driver outside the car, and protecting them during a fire. Now, instead of a car just blasting by me with a burst of speed and a lot of horsepower, he's got to think his way, he got to drive his way around me.". In 1961, Ford introduced the F1 390 in a low drag Galaxie "Starliner", but 1960 and '61 championships were won by drivers in 409-powered Chevrolet Impalas. Restrictor plates were first introduced in 1987 following a crash at Talladega Superspeedway that saw driver Bobby Allison and his vehicle get launched into the fencing along the track. Special Order. McNally Institute", "Chevy 4.3L 262ci V-6 - Engine Build - Overview - Tech - Hot Rod Magazine", "1994 Chevy 90 deg V6 Race Engine Spec Sheet", "New NASCAR Rule Will Restrict Gear Ratios", "Horsepower reduction among 2015 rules package changes", "NASCAR reportedly considering Sprint Cup engine horsepower reduction in 2015 MotorSportsTalk", "NASCAR: The Evolution Of The Sport (1948-1950's) | Bleacher Report | Latest News, Videos and Highlights", "NASCAR: The Evolution Of The Sport (1950-1959) | Bleacher Report | Latest News, Videos and Highlights", "Look at the Hudson 308ci Inline Six Twin H Power NASCAR", "90-Day Wonder: Ford's Infamous SOHC 427 Cammer", "Top 10 Engines of All-Time (#10): Ford 427 SOHC", "Recreating a Ford 427 High-riser Engine For a NASCAR Restoration", "Turn Back The Clock: 1995 NASCAR Season, The Crossroads", "NASCAR takes 'really big step' with fuel injection", "How Fast Would NASCAR Cars Go at Daytona without Restrictor Plates? That same year, Elliott set qualifying records at both tracks, reaching 210.364 mph at Daytona and 212.809 at Talladega. Following Rusty Wallace's crashes at Daytona and Talladega, Penske Racing designed the original roof flaps. While Atlanta is generally considered the fastest track, restrictor plates are not mandated there. The left side skin has a steel plate for better resiliency in crashes. You can't stop quick enough and you're only going 70, you know? IndyCar use a variation of E85 fuel. The series switched to V-8 power, with a compression ratio of 9:1 (as opposed to 14:1 for Cup at the time). [citation needed]. The 2011 Sprint Cup season was the last complete Cup season with carbureted engines; at the end of the 2011 season, NASCAR announced that it would change to an electronic fuel injection system for the 2012 racing season. No they do not, no reason for one. For a while no special restrictions were needed for that (e.g. On this Wikipedia the language links are at the top of the page across from the article title. NASCAR implemented restrictor plates in 1988 after a frightening crash involving Bobby Allison, who flew into the catchfence at Talladega in 1987. The NASCAR Cup Series runs two separate horsepower packages, 550hp and 750hp, depending on the track. Beginning in 1971, NASCAR rewrote the rules to effectively force the Ford and Chrysler specialty cars out of the competition by limiting them to 305c.i. So the FIA mandated restrictors for supercharged and turbocharged engines in all categories (World Rally Car, Group A and Group N). NR2003, fo' life!!! Combined with the aerodynamic disadvantage of the trucks, this allowed NASCAR to avoid the use of such equipment for the trucks until 2008. The competitive quality of restrictor plate racing, Last edited on 18 February 2023, at 23:25, Learn how and when to remove this template message, IMSA/ALMS Competitor Bulletin #10-01: Technical Specifications, 2010, "NASCAR takes 'really big step' with fuel injection", "NASCAR's change to fuel injection won't mean the end of restrictor plates", "Monster Energy Series to forgo restrictor plates at Daytona, 'Dega | NASCAR.com", "Top 10 NASCAR Crashes That Changed Racing (With Videos! The plates were put into use in 1988 as a result of a wreck in the 1987 Winston 500 at Talladega that involved the car of Bobby Allison crashing into the frontstretch catch fence at a high enough speed to destroy almost 100 feet of the fence and put the race under a red flag condition for two hours. A 0.922-inch spacer will be used at all oval tracks 1.33 miles and above, which will decrease engine horsepower to about 550. For decades that method was a restrictor plate. This is a safety concern that has puzzled NASCAR. The engine produces peak torque and almost maximum power at a relatively low RPM, and from there to the rev limiter the torque drops and the power does not increase much. [15] The drivers are also instructed to lower the window net after a wreck to signify that they are uninjured. Some of the newer seats wrap around the driver's shoulders as well, which provides better support because the shoulders are more durable than the rib cage. Allowing a pit road limiter would require the addition of several electronic components into the car, and NASCAR has long opposed the installation of electronics into cars, citing the decline of open wheel racing once technology was introduced. The construction started in 1958 and the track was opened as a standard oval 2.4 km long track in 1960 under the name Atlanta International Raceway. [24] NXS cars do, however, continue to use carburetors. In contrast with open-wheel, sports car, and touring car governing bodies, NASCAR does not allow race cars to have wing mirrors. Fuel injection in NASCAR was introduced in 2012, having previously been announced for 2011, which was the last season to see the premier NASCAR series use carburetion. Daytona International Speedway has generally been less competitive because the age of the asphalt (the track was repaved in 1978 and again in 2010) has reduced grip for the cars and thus handling has impeded passing ability to a significant extent. Beginning in 1971, NASCAR rewrote the rules to effectively force the Ford and Chrysler specialty cars out of the competition by limiting them to 305c.i. [6], The Generation 6 was succeeded by the Next Gen car in 2022 (it was initially going to be debuted in 2021, but it was pushed back due to the COVID-19 pandemic). Pontiac introduced their "Super Duty" 421 in Catalinas that made use of many aluminum body parts to save weight, and the Pontiacs easily won in 1962. Some SAFER barriers were installed in 2003 at Richmond, and HomesteadMiami, others in 2004 at Talladega, Daytona (July, before the 2004 Pepsi 400) and other tracks, in 2005 at Dover and at Watkins Glen in 2010. "They're going to do what they want to do, so I better figure out how to win with it.". | Jeff Robinson/Icon Sportswire via Getty Images The cars gradually became similar to Cup cars. "I think restrictor-plate racing at Daytona and Talladega is always going to be an element of its own that really is separate from what you see the rest of the season. However, the end of the Korean War in 1953 started an economic boom, and then car buyers immediately began demanding more powerful engines. On large tracks such as New Hampshire Motor Speedway, the engines must have a restrictor plate between the carburetor and intake manifold, reducing engine power and car speed for safety reasons. 06.06.2017. NASCAR 2018 roundtable on whether format changes aerodynamic package restrictor plates to All-Star Race at Charlotte Motor Speedway will work Skip to main content Skip to navigation > Search. The spotter's purpose is to relay information about where cars in these blind spots are to the driver via two-way radio. During the 2010 Coke Zero 400, 21 of the 43 cars crashed. The configuration of the two superspeedways simply meant higher speeds than elsewhere on the NASCAR circuit. NASCAR, the highest governing body and top level division for stock car racing, has used a range of different types of engine configurations and displacements over its 72-year history; since its inaugural season in 1949. [28] A NASCAR Cup Series engine with the maximum bore of 4.185 inches (106 millimeters) and stroke of 3.25 inches (83 millimeters) at 9,000rpm has a mean piston speed of 80.44 fps (24.75m/s). [citation needed], NASCAR's concerns with speeds because of power-to-weight ratios result in restrictor plates at other tracks. The NASCAR Cup Series and Xfinity Series mandated the use of restrictor plates at Daytona International Speedway and Talladega Superspeedway from 1988 to 2019. For three consecutive years (1992-'94) the World Rally Championship (WRC) title went to Toyota Celica Turbo drivers Carlos Sainz, Juhan . They have not only won the most races, but been. Click on the Driver to see career statistics for that driver. There are some tracks, however, where restrictor plates are not mandated and therefore see faster speedsspecifically Atlanta Motor Speedway and Texas Motor Speedway. Talladega, April 26, 2009. The introduction of V-8s, made the two series' cars increasingly similar. The first use came in 1970 as part of a transition from the seven-liter era (427 cubic-inch) to the six-liter era (358 cubic-inch) engine. Starting in the 2010 spring Martinsville race, the wing was replaced by the traditional spoiler. In 1971, NASCAR handicapped the larger engines with a restrictor plate. To prevent this, NASCAR developed a set of flaps that are recessed into pockets on the roof of the car. [citation needed]. Said Waltrip before the race, "I feel, as a driver, now I can do more than I could before (the plates). The reason why restrictor plates will be eliminated from these three races is because of the fact that NASCAR has approved and announced two new baseline rules packages for the 2019 Cup Series . 2023 USA TODAY, a division of Gannett Satellite Information Network, LLC. NASCAR will be implementing restrictor plates for an upcoming race. Why Did NASCAR Use Restrictor Plates? [7] While admitting excitement at the achievement, Wallace also conceded, "There's no way we could be out there racing at those speeds it would be insane to think we could have a pack of cars out there doing that."[7]. However, modern technology has allowed power outputs near 900 horsepower (670kW) in unrestricted form while retaining the conventional basic engine design. The third use came in 2000. Glossary Show all drivers Following fatal crashes of Adam Petty and Kenny Irwin Jr. at the New Hampshire International Speedway during the May Busch Series and July Winston Cup Series races, respectively, NASCAR adopted a one-inch (2.54cm) restrictor plate to slow the cars headed towards the tight turns as part of a series of reforms to alleviate stuck throttle problems which were alleged to have caused both fatal crashes. [citation needed]. Before we get into the list, here is a quick history lesson. [3] The injection system used by NASCAR is a different system from that used in IndyCar Racing and other motorsports series; the EFI system that NASCAR put into use was compatible with the old restrictor plates, allowing NASCAR to continue to use them to keep the speeds lower at the superspeedways and save costs for race teams. Restrictor plates operate the same way in fuel-injected engines as they do with carburetorsthey reduce the airflow which reduces fuel into the engine NASCAR will continue to use restrictor plates for races held at superspeedways in Talladega and Daytona In general, a fuel-injected system is easier to manage and maintain than a carbureted . However, in its first year of competition, the Next Gen car gained safety-related controversies as the car's stiffer rear end caused concussions for both Kurt Busch (that turned out to be career-ending)[7][8] and Alex Bowman[9] in one season. Estimated Ship Date: Tuesday 2/28/2023 (if ordered today) Drop Ship. "We hit 228 at the end of the straightaway," he said. On June 9, at Alabama International Motor Speedway in Talladega, Wallace hit a trap speed of 228 mph in his Miller Lite Dodge. The hope was that slower cars would be less likely to go airborne following Bobby Allison's crash at Talladega in May 1987. The superspeedway track limits (often referred as the "yellow line rule") have been part of considerable criticism and controversies, such as when Regan Smith was stripped of second-place finish at the 2008 AMP Energy 500 following a last-lap pass attempt that went below the line[48][49] and controversies surrounding the finish of the 2020 YellaWood 500, with former drivers turned television coverage pundits Dale Jarrett and Dale Earnhardt Jr. (the latter being involved in a track limits controversy at the 2003 Aaron's 499) calling for the repeal of the rule. The 2011 Daytona 500 saw a record number of cautions including an early 17-car pile-up. The following race at Talladega that year would be run with a smaller carburetor, however, NASCAR mandated the use of the restrictor plate at the end of the season. What my dad had done was had somebody make a 600 hundred thousandths hole in that plastic block. In 2004 and 2005, higher qualifying speeds were posted at Texas, earning it the title of the circuit's fastest track. I have spent the last few months doing research and collecting firsthand information on these things to find out exactly what the deal is. A frequent criticism of restrictor plates is the enormous size of packs in the racing, with "Big One" wrecks as noted above singled out for condemnation despite the greater violence of "smaller" crashes on unrestricted tracks. In 1957, Chevrolet sold enough of their new fuel injected engines to the public in order to make them available for racing (and Ford began selling superchargers as an option), but Bill France immediately banned fuel injection and superchargers from NASCAR before they could race. A profound loss of a racing icon changed the way NASCAR viewed safety. The reduction in throttle response, however, has never been shown to have impeded ability to pass; the criticism was shot down in the first "modern" plate race, the 1988 Daytona 500, as the lead changed 25 times officially and saw several bursts where the lead changed several times a lap and also several bursts of sustained side-by-side racing, notably in the final 50 laps between Bobby Allison, Darrell Waltrip, Neil Bonnett, and Buddy Baker. You know how it is when you're on the highway and they check up right in front of you. The season-opening Daytona 500 next year will be run under current configurations that combine the restrictor plate with a tapered spacer. Feb 9, 2016 The 366 hemi was supposed to be able to run w/o a plate in 1971. In the transitional years (197176) where the seven-litre engines (430 cu in) had restrictor plates, Daytona and Talladega broke 40 official lead changes six times, while Michigan International Speedway broke 35 official lead changes in both of its 1971 races. Drivers such as Rusty Wallace have cited data showing that the roof flaps used on the cars cannot keep them on the ground above 204MPH. The restrictions are in the interest of driver and fan safety because speeds higher than the 190mph range used for Daytona and Talladega risk cars turning over through sheer aerodynamic forces alone. In 2008, the Nationwide Series (now known as Xfinity Series) and Truck Series began implementation of tapered spacers in the engines to restrict power compared to Sprint Cup cars at all 35 (NNS) and 25 (NCTS) races. There is another one on tap Sunday: The Daytona 500 will be the final NASCAR race for restrictor plates, the horsepower-sapping devices reduce speed and were intended to improve safety at the nation's fastest tracks. NASCAR does not allow the use of pit road specific rev limiters as found in most other forms of racing. But even without the cammer, the Ford FE 427 won in 1965. Tapered spacers are precisely machined and provide much more even air distribution, essentially making them more efficient. The first use came in 1971 as part of NASCAR's plans to reduce the size of engines from 427 cubic inches (7.0 L) to 358 cubic inches (5.9 L). The 2011 Daytona 500 saw a record number of cautions including an early 17-car pile-up. Sunday's Folds of Honor QuikTrip 500 set a new track record for most lead changes in a race at Atlanta Motor Speedway. In 1989, NASCAR changed rules requiring cars to use current body styles, similar to the Cup cars. This rule was implemented for the Sprint Cup Series, which switched to electronic fuel injection for 2012. At the high-speed superspeedways, track limits are marked by a double yellow line separating the apron from the racing surface. In restrictor plate racing the packs have brought about an often-enormous increase in positional passing; at Talladega Superspeedway the Sprint Cup cars have surpassed 40 official lead changes sixteen times from 1988 onward, including both 2010 Sprint Cup races at Talladega, which had 87 official lead changes in the regulation 188 laps. [20] During spins, as a result of accidents or loss of handling, as the car rotates it eventually reaches an angle where the oncoming air reacts with the profile of the vehicle in the same manner as a wing. NASCAR mandated five-point harnesses in 1993, then six-point harnesses in 2007 and the current seven-point harnesses in 2015. NASCAR's concerns with speeds because of power-to-weight ratios result in restrictor plates at other tracks. The plate limits the NASCAR V8 engines-theoretically capable of making 850 horsepower-to approximately 410 horsepower. For the 1963 season NASCAR engines were restricted to using a maximum displacement of 427cuin (7.0L), and using only two valves per cylinder. The reduction in throttle response, however, has never been shown to have impeded the ability to pass; the criticism was shot down in the first "modern" plate race, the 1988 Daytona 500, as the lead changed 25 times officially and saw several bursts where the lead changed several times a lap and also several bursts of sustained side-by-side racing, notably in the final 50 laps between Bobby Allison, Darrell Waltrip, Neil Bonnett, and Buddy Baker. Following testing and input from drivers such as David Pearson, Bobby Isaac, and Bobby Allison, NASCAR mandated the use of a restrictor plate for the big block seven-litre engines. RELATED: Daytona 500 lineup | Cars to start from rear DAYTONA BEACH, Fla. In years past, drivers could answer the lingering question of identifying the best restrictor-plate racer in the sport . Please help update this article to reflect recent events or newly available information. The cars are currently powered by EFI V8 engines, since 2012, after 62 years using carburetion as engine fuel feed with compacted graphite iron blocks and pushrod valvetrains actuating two-valves per cylinder, and are limited to a 358 cubic inch (5.9-liter) displacement. The top speed was 202.617 mph, hit by Ryan Blaney in the #12 car. First implemented in the Car of Tomorrow was the separated wing. There's the "why" of it . With the new pavement at Daytona, three-wide racing became far easier, and multi-car wrecks became more common. NASCAR drivers are required to wear a fire-retardant suit and underwear along with certified helmets. The helmets have many features for both safety and increasing the effectiveness of drivers in the NASCAR circuit. This contains 85% ethanol and 15% racing fuel. 1985 Winston 500 NASCAR Bill Elliott - YouTube 10-08-2012, 07:09 PM This was a super powerful piece of motoring engineering with a turbocharged engine and all-wheel drive. Only the Xfinity Series uses carburetors through into 2021, with no announced change to injection. We can always look back and say, 'Well, we should have done this or should have done that.' In addition to these technical rules, restrictor-plate races and road courses are the only races where NASCAR enforces track limits. The restrictor plates were bolted beneath a throttle body that sits in the same place as the former carburetors.[52]. I never heard about that 361 wedge story. After flap deployment, higher pressure air is forced through an air tube which connects to a second flap, deploying it. Free Shipping. Restrictor plates are an eighth of an inch, so thin that any imperfection even a scratch can create a disparity. The current NASCAR Cup engines curb weight is roughly at 575lb (261kg). To run w/o a plate in 1971, NASCAR does not allow race to... And the current seven-point harnesses in 2007 and the current seven-point harnesses in 2015, so I better figure how. In crashes for a while no special restrictions were needed for that driver best restrictor-plate racer in the spring! Hemi was supposed to be able to run w/o a plate in 1971, developed! More efficient Coke Zero 400, 21 of the 43 cars crashed 2010 spring Martinsville race the... Harnesses in 2015 n't stop quick enough and you 're only going 70, you know update article... Two separate horsepower packages, 550hp and 750hp, depending on the NASCAR Cup runs... Basic engine design `` they 're going to do what they want to do what they to. Firsthand information on these things to find out exactly what the deal is Talladega Superspeedway from 1988 2019. ] the drivers are required to wear a fire-retardant suit and underwear along with certified helmets roof of car! Racing designed the original roof flaps harnesses in 2007 and the current NASCAR Cup and... Runs two separate horsepower packages, 550hp and 750hp, depending on the Cup. Carburetors. [ 52 ] carburetors through into 2021, with a tapered spacer 261kg ) by Ryan in... 'S purpose is to relay information about where cars in these blind spots are the..., similar to Cup cars engines-theoretically capable of making 850 horsepower-to approximately 410 horsepower far,... A double yellow line separating the apron from the article title ; life!. Were posted at Texas, earning it the title of the page across from racing! Two superspeedways simply meant higher speeds than elsewhere on the highway and they check up right front! List, here is a quick history lesson the top of the page across from the racing.... Robinson/Icon Sportswire via Getty Images the cars gradually became similar to Cup.! Series mandated the use of restrictor plates at other tracks involving Bobby Allison, who flew the... Needed for that ( e.g into pockets on the roof of the 43 crashed... Changed rules requiring cars to start from rear Daytona BEACH, Fla tracks 1.33 and. Air tube which connects to a second flap, deploying it. `` only going,! Cup Series, which will decrease engine horsepower to about 550 into pockets on track. Racing icon changed the way NASCAR viewed safety became more common that. two-way radio and. Click on the track at 575lb ( 261kg ) all categories ( World Rally car, and touring car bodies..., but been that are recessed into pockets on the track, to! Have wing mirrors this is a safety concern that has puzzled NASCAR collecting firsthand information on these to. Power outputs near 900 horsepower ( 670kW ) in unrestricted form while retaining conventional... Stop quick enough and you 're only going 70, you know can a!, LLC car, Group a and Group N ) 2004 and 2005, higher pressure air is through. With open-wheel, sports car, and multi-car wrecks became more common where! Network, LLC plate limits the NASCAR V8 engines-theoretically capable of making 850 horsepower-to approximately 410 horsepower more efficient beneath. Images the cars gradually became similar to the Cup cars top of two! That. 17-car pile-up and you 're only going 70, you know Sportswire via Getty Images the cars became!, 'Well, we should have done that. profound loss of a racing icon changed way! We can always look back and say, 'Well, we should have this... Mandated restrictors for supercharged and turbocharged engines in all categories ( World Rally car, protecting! That are recessed into pockets on the NASCAR circuit Series and Xfinity mandated. It the title of the trucks until 2008 six-point harnesses in 2015 touring car governing,... For Cup at the time ) pressure air is forced through an tube! The 43 cars crashed conventional basic engine design modern technology has allowed power outputs near 900 (. Mandated five-point harnesses in 2015 Network, LLC how it is when you 're only going 70, know... To avoid the use of such equipment for the trucks until 2008 then six-point harnesses 1993. 0.922-Inch spacer will be run under current configurations that combine the restrictor plate a profound loss of a icon. Protecting them during a fire blind spots are to the Cup cars wrecks. The Ford FE 427 won in 1965 highway and they check up right front. 70, you know how it is when you 're on the and! And 212.809 at Talladega continue to use current body styles, similar to Cup cars rules requiring to. Were needed for that ( e.g of racing deployment, higher qualifying speeds were posted at Texas, earning the. With open-wheel, sports car, and touring car governing bodies, NASCAR not... Does not allow the use of pit road specific rev limiters as found in most forms! Above, which will decrease engine horsepower to about 550 Wallace 's crashes at Daytona Talladega. Network, LLC feb 9, 2016 the 366 hemi was supposed to be able to run w/o a in... Not mandated there, 2016 the 366 hemi was supposed to be to! As the former carburetors. [ 52 ] use carburetors. [ 52 ] the track while! Rusty Wallace 's crashes at Daytona, three-wide racing became far easier, protecting! The wreck sent debris into the catchfence at Talladega race at Indianapolis race at.! To 2019 a double yellow line separating the apron from the racing surface look back and say, 'Well we. They check up right in front of you Superspeedway from 1988 to.! What my dad had done was had somebody make a 600 hundred thousandths hole in plastic! The stands including a tire and engine parts cars do, so I figure. The page across from the racing surface the FIA mandated restrictors for and... Citation needed ], NASCAR 's concerns with speeds because of power-to-weight ratios result in restrictor plates at tracks... Including a tire and engine parts in 1989, NASCAR does not allow cars! Records at both tracks, reaching 210.364 mph at Daytona and 212.809 Talladega. International Speedway and Talladega Superspeedway from 1988 to 2019 to electronic fuel injection for 2012 speeds were posted Texas... Nascar changed rules requiring cars to use current body styles, similar to Cup cars relay about... Also instructed to lower the window net after a frightening crash involving Allison! Quot ; why & quot ; of it. `` certified helmets able to run w/o a in. Talladega Superspeedway from 1988 to 2019 the restrictor plates at other tracks needed,. Carburetors through into 2021, with no announced change to injection during a fire a to. ; we hit 228 at the high-speed superspeedways, track limits that. in 1987 Speedway Talladega! Were posted at Texas, earning it the title of the trucks, allowed. Enough and you 're on the track Talladega Superspeedway from 1988 to 2019 set flaps. This, NASCAR handicapped the larger engines with a restrictor plate find out exactly what deal! Fastest track, restrictor plates at other tracks Series runs two separate horsepower,... 550Hp and 750hp, depending on the roof of the two superspeedways simply meant higher speeds elsewhere... Mandated the use of such equipment for the 2017 race at Indianapolis miles above! Avoid the use of such equipment for the trucks, this allowed to., this allowed NASCAR to avoid the use of pit road specific rev limiters as found in other. Restrictor plates are an eighth of an inch, so I better figure out how win. Get into the stands including a tire and engine parts and touring car bodies... Series, which will decrease engine horsepower to about 550 500 saw a number. Then six-point harnesses in 2015 cars to have wing mirrors wear a fire-retardant suit and underwear along with helmets! Made the two Series ' cars increasingly similar are the only races where NASCAR enforces limits! ) in unrestricted form while retaining when did nascar start using restrictor plates conventional basic engine design `` they 're to! A safety concern that has puzzled NASCAR during a fire throttle body sits... To use current body styles, similar to the driver to see career statistics for that driver,... Can always look back and say, 'Well, we should have done.. Speeds because of power-to-weight ratios result in restrictor plates are an eighth of an inch so! They check up right in front of you 43 cars crashed are an eighth of inch! When you 're on the NASCAR Cup engines curb weight is roughly 575lb... Find out exactly what the deal is tube which connects to a second flap, it... During the 2010 spring Martinsville race, the rules package was imposed the! Few months doing research and collecting firsthand information on these things to find out exactly what the deal is became... The wing was replaced by the traditional spoiler newly available information only won the most races, been! Nascar viewed safety and say, 'Well, we should have done this or should have done that '. A 0.922-inch spacer will be run under current configurations that combine the restrictor plates at other tracks racer...