A new chassis was built using 4" main chassis tubes (up from 3") and coil springsuspension all around. "The engine in a NASCAR race car is probably the most crucial component," according to HowStuffWorks.com. Pearson lead entering the final lap, but pulled down to the low groove to allow Petty to pass. Its a constant search for power and its amazing some places where you find it, Randolph says. The early part of the 1972 NASCAR Winston Cup season was rather lethargic. 1971 saw Richard Petty win his third Daytona 500, while reigning NASCAR champion Bobby Isaac, who had fully intended to defend his title in 1971, was kept at bay by Nord Krauskopf, owner of the No. This design was first used on the 427, and then in 1968 on a special 302. Coming all the way from Colorado to St. Louis for the 2022 Builders Brawl was Justin Willis and his 1971 Nova, which features a twin-turbo 540 cid big block Chevy engine capable of 2,000 horsepower. Denver , NC. NASCAR Cup is a true racing series where there is not any kind of balance for performance or any kind of penalties that the sanctioning body puts on engines that over perform. On August 16, 1970, while big-blocks still reigned supreme, NASCAR mandated the first use of restrictor plates with maximum venturi openings of 1.25 inches. Coming all the way from Colorado to St. Louis for the 2022 Builders Brawl was Justin Willis and his 1971 Nova, which features a twin-turbo 540 cid big block Chevy engine capable of 2,000 horsepower. Tapered spacers have been used in NASCAR's Cup Series since 2015, when a 1.170-inch aluminum block reduced horsepower from about 850hp (634kW) to approximately 725hp (541kW) at several tracks. Following a national and international search, eight talented drivers were selected for the newest class after participating in the Advance Auto Parts Drive for Diversity Combine. "Our drivers have been asking for more horsepower and thanks . in. Nicknamed King of the Jungle II, this Trans Am is a Pro275 drag car built by Cory Clemens of Clemens Motorsports Unlimited LLC. This version utilized a 427 cubic inch side-oiler version of the FE in place of the original's 289 cubic inch smallblock. It was the most competitive title chase in NASCAR history, with Isaac only winning the championship by a mere 51 points. range. During the 1970s, when NASCAR mandated a 358-cubic-inch limit, Ford's "Cleveland" V-8 engine was called into duty. Exceeding track limits to advance one's position is subject to a drive-through penalty, or if the foul occurs on the last lap that car will be relegated to the last car on the lead lap in official race results. NASCAR engines are operating at 7-10000 Rpms for 3-4 hours non stop and comfortably. The basic architecture [of the engine] as far as bore spacing, bore sizes, two valves, push rods, etc. by piston guy Wed Mar 27, 2013 6:51 pm Inline valve heads were never Nascar accepted on small block Fords. And a young Darrell Waltrip racked up his first career NASCAR Winston Cup Grand National victory with a two-lap triumph in the Music City USA 420 at his hometown Nashville Speedway. [31][32][7][8], The engines used in the final iteration of the Generation 6 cars were limited to 750hp (559kW) on tracks 1 mile or below; 550hp (410kW) on tracks greater than one mile (201921)[33], Modern contemporary NASCAR engines are capable of producing well over 2hp/cu. Jason Chapmans 1968 Camaro SS features a nitrous-powered 478 cubic inch big block Chevy engine complete with a Benjamin Franklin $100 wrapped intake manifold. 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. Rusty Wallace tested a car at Talladega Superspeedway without a restrictor plate in 2004, reaching a top speed of 228mph (367km/h) in the backstretch and a one-lap average of 221mph (356km/h). Head gaskets at the Cup level are under some of the most stress of any part, and ECR uses Cometic Gaskets. [34], Currently, Next Gen NASCAR engines are even less powerful. Cast iron production Cleveland with raised port plates through '81 and aluminum "Motorsport" canted valve heads until the "Yates" head revolution when the "cant" was removed. FEATURED. From 1970 to 1979 The 350, 400, and 455 engine size is stamped on the left front of the block. All that development comes down to horsepower on race day. Check it out. Bobby Isaac overtook James Hylton in late August and won the 1970 NASCAR Grand National champion ship. 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. . The "Max Wedge" was making a name for itself on the drag strips and Chrysler decided it was time to be taken seriously in the NASCAR circuit. The expenditure pays off in the power that the engines develop. [The 355 block was common to all racing applications before 2001.] We want to make things as light as they can possibly be, but still be stiff where stiffness is required and still have enough structural integrity to last through the event without any failures, he says. However, the Modifieds still use a restrictor plate because the speeds are too great for that class of racecar without them. Accomplishments: 303ci direct-drive dry-sump, SD-455 clean-block test, reverse manual-valvebody automatic . The 1970 Tidewater 300 was the final NASCAR race held during its Grand National era. A new points system had been introduced, which awarded points per lap completed. Engine of the Week is sponsored byCometic Gasket, To see one of your engines highlighted in this special feature and newsletter, please emailEngine Buildermanaging editor, GregJonesat[emailprotected]. The Hemi engine reintroduced in 1964 was the called the "Race Hemi." Its just a constant pressure to look at everything, and we spend a lot of money on instrumentation now because its very difficult to find 1- or 2-horsepower improvements. by dfree383 Thu Feb 28, 2013 6:07 am, Post For pistons ECR uses MAHLE. The origin of the Boss 429 was to fulfil Ford's need to homologate the 429 semi-hemispherical engine for NASCAR racing. This generation of NASCAR cars was designed to handle the series' new superspeedways. We put an addition on the restoration shop because we needed room for that, and we figured we might as well start a machine shop too at the same time. In 1970 the 428 Cobra Jet Motor was replaced with a 429 CJ engine. Five-time Riverside winner Dan Gurney finished sixth. ", "What Engine Does Toyota Use in Nascar? "1970 NASCAR Grand National Central - The Third Turn", Racing Reference 1970 Grand National Results, https://en.wikipedia.org/w/index.php?title=1970_NASCAR_Grand_National_Series&oldid=1050075547, This page was last edited on 15 October 2021, at 16:30. Generation 1: 1948-1966 -Strictly stock frame and body. Famous Petty Wing Car confirmed by Richard Petty as his 1970 Superbird. At these races, in addition to the restrictor plate, there are a variety of other technical rules and regulations to keep the cars stable and on the track. The restrictor plates were bolted beneath a throttle body that sits in the same place as the former carburetors.[52]. These performance enhancements that ECR creates is all part of the teams engine development philosophy, which is not to develop the engine as an 8-cylinder engine, but rather as eight one-cylinder engines. The box that you have to operate in and what you can do is actually quite large, he says. Another involved Canadian rookie Earl Ross, who outlasted Richard Petty and Cale Yarborough and outran Buddy Baker in the final laps to win the Old Dominion 500 at Martinsville. The baseline aero elements of the 2019 rules package are a taller 8-inch by 61-inch rear spoiler, a larger front splitter with a 2-inch overhang, and a wider radiator pan that measures 37 inches . Just five years ago, Brandon Sandlian was pretty green to drag racing and engine building. We were excited to learn more about his 1971 Dodge Demon with a supercharged 500 cid billet Hemi engine in it, and caught up with Doc at the 2022 Builders Brawl race event at World Wide Technology Raceway. On the 351C, the difference extended beyond the carb and intake manifold. Check it out! One popular idea was to use 231275cuin (45L) six-cylinder engines; instead of Cup Series' 358cuin (5.9L) V-8s.[21][22][23]. We design each cylinder individually such that when you add the eight cylinders together you get a power curve thats optimized for the specific track youre going to.. Isaac ran about half the races in 1971, winning four times. -Heavy-duty rear axle required to keep cars from flipping during the race. RacingOne. There were 2 cautions (for 10 laps) and 3,200 people attended this race. It is not the intent of these specifications to replace the comprehensive and detailed service practices explained in the GM 2013 Entries and slick body styles sold to the public but made for NASCAR. The Pro stock Pinto book was adamant that 50 psi was the minimum allowable hot oil pressure for a Pro Stock motor; we applied that limit to street motors too. Thats a 5.8L two-valve per cylinder V8. NASCAR handicapped the larger engines with a carburetor restrictor plate. Designed to contest Superspeedway and other big oval races for the 1970 season. At the time, it typically took three years for a new engine design to end up in production and be available for NASCAR racing. The introduction of V-8s, made the two series' cars increasingly similar. Our first year in business was 2005, and its been going well ever since.. Ford started to sell "cammers" to the public to homologate it (mostly to dealer-sponsored privateer drag racers), but NASCAR changed the rules to specify that all NASCAR engines must use a single cam-in-block. Despite smaller fields of competition, NASCAR Winston Cup racing was getting more television time as well. The next time youre watching the Monster Energy NASCAR Cup Series on TV, think about what goes into those engines for an afternoon of racing entertainment. 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. By the 1975 NASCAR Winston Cup Grand National season, the transition from big to small engines was complete. With his Plymouth stock car powered by the 426, Petty won the first of his seven career NASCAR titles in 1964. Model: 1970 Ford Torino King Cobra Prototype Engine/Motor: V8 Horsepower: 700 Pros Cons Exterior The King Cobra project added numerous visual modifications to the Ford Torino. Rick just sent over some dyno data on a new Ford 378 cu in Nascar Cleveland engine and set of heads he put together. Cale Yarborough was the winner of the race. It was one of a handful of bright spots in an otherwise troubled season. The specs made it more than enough to compete with the likes of BOSS Mustangs and HEMI Mopars. We instrument each cylinder with cylinder pressure so we can determine the power contributions of each of the eight cylinders individually, he says. The 1970 American 500 was a 500-mile race that took place on November 15, 1970, at the North Carolina Motor Speedway in Rockingham, North Carolina. However, an unexpected consequence of the introduction of the Car of Tomorrow and re-paving of Daytona and Talladega track surfaces has been the separation of the pack into two-car pairs. Both these NASCAR series now use a restrictor plate and tapered spacer at the two tracks. It was also the last NASCAR national touring series season to feature a dirt track race until the 2013 NASCAR Camping World Truck Series, and the last time the Cup series raced on dirt until the 2021 NASCAR Cup Series. The W-series engine was made of cast iron. When James Watt invented the steam engine in the 1770s, he needed to convince people that his engine could do everything horses could. 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. The bores have been opened up .005 inch from the NASCAR maximum size of 4.185, which between the wider bore spacing and the CGI material, poses no problems at all. a funny car chassis is made of exactly 179 feet of 4130 Chromoly tubing and weighs 125 pounds. Since the 2012 season, NASCAR Cup cars now have fuel injection instead of carburetors, but restrictor plates are still being used. The cars gradually became similar to Cup cars. During a race, it is not uncommon to see thirty or more lead changes during a race. Each part is serialized and has a prescribed lifetime to it. These cutouts were designed to be capped with headlight covers for racing, making for an even slicker profile. In the early 1970's Nascar went to 355 cubic inches ? The goal was to stay period correct, so I had the cam ground close to stuff advertised in old Hot Rod magazines and build it like a guy made a few trips to the local speed shop back in the day, Jason says. A NASCAR Cup Series engine with the maximum bore of 4.185 inches (106 millimeters) and stroke of 3.25 inches (83 millimeters) at 9,000 rpm has a mean piston speed of 80.44 fps (24.75 m/s). Parsons crashed early, but his team was able to make miraculous repairs to get him back into the race. See what else Jason has in this engine build! [50][51] If track limits are violated on road courses (such as not making a chicane, enforced at Watkins Glen, Daytona, and Charlotte road courses), drivers must stop at an assigned point of the circuit or face a drive-through penalty. Engineers added a wild, wind-cheating nose with a radically sloped hood to the stock 1970 Torino Cobra body. Every team in NASCAR in 1971, save Petty Enterprises, felt the pinch of the factory withdrawal. NASCAR and Rev Racing have announced the next generation of drivers participating in the NASCAR Drive for Diversity Driver Development Program. So if I looked at a 1980 Nacar racer I would see a SBC or a Ford Cleveland ? From 1977 to 1979 the blocks have 3 mount holes. Related Articles. of torque from 4,400-5,900 rpm with a peak of 453 ft.-lbs. In 2007, Chevrolet revamped their original design and introduced the R07. The Todd Werner Collection. . [47] The transition was not complete until 1974 and coincided with American manufacturers ending factory support of racing and the 1973 oil crisis. Said Waltrip before the race, "I feel, as a driver, now I can do more than I could before (the plates). ECR partners with Lucas Oil on those performance developments. The shop can handle anything that comes in the door, but the focus is on automotive restoration jobs and circle track engine work. Title: Assistant Race-Engine Engineer, Pontiac V-8 Power Development. iRacing's online racing platform features dynamic physics and tire modeling systems that govern each car on a given track, allowing racers to anticipate and respond to real racing challenges in an 1970 Plymouth Superbird specs, 0-60, quarter . Despite the Cammer's exotic cachet, in reality the engine was simply a two-valve, single-overhead-cam conversion of Ford's existing 427 FE V8, and a quick and cheap one at that. FastestLaps.com 2023 Today, the opposite is true. Then we will design the cam timing, the exhaust systems, the intake geometry and even sometimes the compression ratio, although we have a maximum compression ratio of 12:1. Piston rings are another major part with the RPMs that ECR turns and the bore sizes that it has, which require a lot of development. ", "Dale Earnhardt Jr. says Regan Smith should have won at Talladega", "NASCAR explains Talladega penalties, defends yellow line rule", "NASCAR official: Out-of-bounds rulings 'clear-cut' in turbulent Talladega finish", "NASCAR's change to fuel injection won't mean the end of restrictor plates", "NASCAR moving away from restrictor plates, not pack racing", "Monster Energy Series to forgo restrictor plates at Daytona, 'Dega", "Restrictor Plates - The Restrictor Plate | HowStuffWorks", "Top 10 NASCAR Crashes That Changed Racing (With Videos! 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. The end result, using PennGrade oil, was a street friendly 490 horsepower and 440 ft.-lbs. Its a huge playground that is fun when youre doing well, but when youre not doing well its more like work., Everything at this level of racing and engine building is purpose designed. However, over time its been refined, and that is the engine the folks at Earnhardt Childress Racing (ECR) put out on the track each week. A large engine has the capacity to produce more power. It was the most competitive title chase in NASCAR history, with Isaac only winning the. In 1965 Ford adapted two single-overhead-cams to their FE 427 V8 to allow it to run at a higher RPM (called the Ford 427 Cammer). by Walter R. Malik Mon Feb 25, 2013 10:00 am, Post by Truckedup Mon Feb 25, 2013 8:36 am, Post Richard Petty won 21 races in 46 starts and breezed to his third NASCAR Winston Cup Grand National championship, in 1971. Pontiac Engines Bore and Stroke Pontiac Engine Codes Prefix and Block Casting Numbers His 1971 Nova was being unloaded from the trailer and the car looked and sounded amazing. As you can see from the information below that these heads have the potential to make 785 hp. Related Articles Josh Steinmetz Named Hot Shots Secret Brand Manager Hoonigan Co-Founder and Racing Icon Ken Block Dies at 55 NGK Spark Plugs Adds Jeffrey Schlenker as GM of Purchasing The season opens at New Smyrna, Content for engine professionals and enthusiasts, - Supercharged 500 cid Billet Hemi Engine, UNDERSTANDING OIL CLEARANCES IN ENGINE BEARINGS, Nitrous-Powered 478 cid Big Block Chevy Engine, 632 Big Block Reher-Morrison Nitrous Engine, 2023 Drive for Diversity Driver Development Class Announced, NASCAR Announces Launch of Brazil Sprint Race Series, Team Penske and Joey Logano Win 2022 Championship, NASCAR Whelen Modified Tour Announces 2023 Schedule, NASCARs Next Gen Cup Series Cars Unveiled for 2022. For 2018, the package is being used at Indianapolis, Michigan, and Pocono for the Xfinity Series and in the All-Star Race in the Cup Series. The current engine regulations, which see Chevrolet and Honda using 2.2-liter twin-turbos, have been in place since 2012. has stayed the same, says Andrew Randolph, technical director for ECR. The engines are a 3.4-liter displacement, twin-turbocharged, 90 degrees V8 engine. Car and Driver magazine had this to say about the engine on the brand-new standard NASCAR vehicle, the Car of Tomorrow: "The 358-cubic-inch (5.9-liter) V-8 is up front and has pushrods actuating two valves per cylinder. Swamp Thing is a well-known drag car, and thanks to Joey Baroni, the car is getting back out to race tracks across the country. The drivers were serious about gaining awareness from NASCAR about conditions at the speedways, including the alarmingly high speeds, the amount of time teams had to spend at a track to prepare for a race, the perceived lack of posted awards, and amenities for the competitors. Swamp Thing is a well-known drag car, and thanks to Joey Baroni, the car is getting back out to race tracks across the country. As a safety measure to reduce speeds at the two high-banked superspeedways (Daytona and Talladega), restrictor plates are used. With the kind of engine speeds that we run, we get our valve springs from PSI out of Michigan.. With new, ultra-modern facilities popping up all over the country and millions of dollars being poured into NASCAR stock racing by the automotive factories, the sport seemed to be on a roll. The series, which will begin competition in 2023, is a partnership between NASCAR and the GT Sprint Race series in Brazil. They are fuelled either by a carburettor or by electronic fuel injection (for Cup Series only). So from an engine development standpoint its really great. This made the 426 Hemi unavailable for the 1965 season. It remained in place until 2001, when Brian France introduced the new "Chase for the Championship" format which awarded more point for wins and restarted the points count for the top 10-12 drivers for the last 10 races of the season. See what else Jason has in this engine build! From the castings, the first thing ECR does is lighten everywhere it can. Check out Swamp Things 632 big block Reher-Morrison nitrous engine! Engine of the Week is sponsored byPennGrade Motor Oil,Elring Das Original and Scat Crankshafts. They use both Del West and Xceldyne for valves. Post Related Articles Holley Announces 2023 Event Dates, NASCAR has announced the creation of the NASCAR Brasil Sprint Race, the sanctioning bodys fourth international series and first in South America. In an officially timed run, Baker became the first driver to surpass the magic 200-mph barrier on a closed oval, with a best lap of 200.447 mph, making him "The Fastest Man on Four Wheels.". Falling between Chevrolet and Oldsmobile on the corporate ladder, Oakland introduced Pontiac in 1926 as a companion model line. "It was totally common for a Cup engine to be down 10 or 15 horsepower at the end of a race," explains Speed Jr., drawing on his experience on a championship NASCAR engine team. 361 (5.9 liter) Bore: 4.047 Stroke: 3.500 The 361 had a short life, but what a life it led! The LT-1 featured a set of proprietary aluminum heads, which were minimally restrictive and conductive to streamlined induction. The 427 was gone. 5. [24] 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. All cars were equipped with the same-size engines and the restrictor plates were gone. While it was designed to encourage more teams to commit to running the full schedule, many observers felt a greater amount of points should be awarded at the major super speedway races than the short tracks. This engine is set up for NASCAR use: Note the cowl induction airbox, the single carburetor, and the cast exhaust manifolds. For circle track work, we do everything from street stock two barrel stuff all the way up to big block modified and dirt late-model engines, he says. [42] The 2010 width is 63/64-inch. His 1971 Nova was being unloaded from the trailer and the car looked and sounded amazing. And Ford hand-built it in just 90 days. NASCAR engines are V8, 90 naturally aspirated engines. 17- David Pearson 32- Dick Brooks -3 71- Bobby Isaac -7 NASCAR's T-Bird 430 V8 and Olds 88 6/6/2019 Greg Zyla Q: Hello Greg, in your column in Auto Round-Up Magazine about the T-Bird and the big engines, you mention the 430-inch V8. We dont know about you, but we could sure go for a cruise in right now! In 1971, NASCAR phased in a rule to lower the maximum engine displacement from 429 cubic inches (7.0 liters) to its present 358 cubic inches (5.8 liters). The Buick GSX 455 Stage 1 has recently been recognized as one of the great muscle car engines of the 1960s and early 1970s and is enjoying a revival of sorts. Parsons took the points lead with a third-place finish at Talladega in early May and never gave up the lead. He held off a late rally by Cale Yarborough to win by only 67.15 points. May 19, 2018, 7:29 AM. Five drivers had a mathematical chance to win the championship entering the final event of the 28-race season. Buddy Baker and Cale Yarborough finished in a dead heat for third place. in.). The version which they use today has been highly refined over the years. -Doors strapped shut, seat belts required. A coil valve spring at 9,000 RPM has to get compressed all the way down until the coils are essentially bound to one another and then sprung back open again, but it has to do that 75 times a second and it has to do it for 4 hours. In 1971, NASCAR handicapped the larger engines with a restrictor plate. Three different companies built and designed chassis as NASCAR . 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 front stretch 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. The drawback to the use of the restrictor plates has been the increased size of packs of cars caused by the decreased power coupled with the drag the vehicles naturally produce. (Also: Engines don't need hay or brushing and don't excrete horse dung.) "How do Toyota, Ford, and Chevrolet Engines Differ in NASCAR? Pearson regained his stride, running Petty down, and making the decisive pass just before the finish line. Winless drivers Cecil Gordon and James Hylton finished third and fourth, while six-time winner Richard Petty placed fifth in the final standings. 1994 was the final year that V6 engines were used in the Busch Series, as many short track series had abandoned six-cylinder engines. Richard Petty had a huge crash on the homestretch, which inspired the window net that is now mandated by NASCAR. For the Winston Cup race, it was used just once at the 2000 Dura Lube 300. by CamKing Wed Feb 27, 2013 3:51 pm, Post With this, the 427 SOHC became among the most powerful engines made in the sixties. But even without the cammer, the Ford FE 427 won in 1965. Connecting rods are either CP-Carrillo or Pankl. Tom Nell. 1970s nascar engine specs; tensile test specimen dimensions iso; Starting from 1948 -- Generation 1 -- all the way to the 2022 NextGen car. The SS also came with heavy-duty . Factory backed race car. When Jason reached out about another engine build he wanted to tell us about, we couldnt tell him no. [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). The Engine size is very large V8 (5.87 liters). Two-barrel 351s had heads with. Despite the Monte Carlo's success on the track, Chevrolet performance enthusiasts didn't warm up to the Monte Carlo SS 454 when it was new, and it sold in limited numbers: 3,823 for 1970 and just 1,919 for '71. The team was allowed to keep the win, but was fined a record $9,100. However, the cars still used V6 engines. Current R9s are canted intake only. The headlights were tunneled into sugar-scoop cutouts in the front fenders, similar in appearance to the Datsun 240Z sports car. The next regs are to be introduced for a six-year period, 2021-2026 inclusive, and on-track testing will commence in the summer of 2020. Combined with the aerodynamic disadvantage of the trucks, this allowed NASCAR to avoid the use of such equipment for the trucks until 2008. The NASCAR Cup Series and Xfinity Series mandated the use of restrictor plates at Daytona International Speedway and Talladega Superspeedway from 1988 to 2019.

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