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The transition period lasted until 1974, when the current 358 cubic-inch (5870cc) limit was imposed and NASCAR eliminated the 427 cubic-inch (7000cc) engine. As the early 1970s use of restrictor plates was considered a transitional process, and as not every car used restrictor plates, this is not what most fans call "restrictor plate racing".
Cup Series teams are restricted in the number of engines they may use in a season (16 engines at minimum must last at least two race weekends), effectively a limit of 20 engines during the season. Changing either will result in starting in the rear of the field.
The trucks of Lance Norick (No. 90) and Terry Cook (No. 88) racing in 1998 Ford F-150 Chevrolet C/K. The idea for the Truck Series dates back to 1991. [1] A group of SCORE off-road racers (Dick Landfield, Jimmy Smith, Jim Venable, and Frank "Scoop" Vessels) [2] had concerns about desert racing's future, and decided to create a pavement truck racing series.
Pearson took advantage of the NASCAR engine and weight rules for 1968 and used a 396 cid engine instead of the normal 427. At that time the car had to be 4,000 pounds with the 427 cid engine but only 3,707 pounds with the 396 cid engine. The lighter weight paid off as Pearson used less fuel and had fewer tire troubles than many of the other teams.
The Petty team was penalized 104 points and fined $35,000 for the rule violations involving the tires and engine. [4] [5] The engine was determined to be 381.983 cubic inches (6,259.58 cc), [4] [5] well over the specifications in the NASCAR rulebook for 1983 which stipulated a maximum of 358 cubic inches (5,870 cc).
National Association for Stock Car Auto Racing, LLC Sport Auto racing Category Stock car racing Sports car racing (IMSA) Abbreviation NASCAR Founded February 21, 1948 ; 76 years ago (1948-02-21) Affiliation ACCUS-FIA Headquarters Daytona Beach, Florida, U.S. (main) Charlotte, North Carolina, U.S. Concord, North Carolina, U.S. President Steve Phelps Peter Jung (Vice President, CMO) Chairman Jim ...
NASCAR eventually adopted a restrictor plate to limit top speeds for the 7.0L engine as teams switched to small-block 358 cu in (5.9 L) engines. NASCAR edited the rules in a way that they hoped would make the cars safer and more equal, so the race series would be more a test of the drivers, rather than a test of car technology. [21]
In 1982, NASCAR's then-new second-tier series (currently known as the NASCAR Xfinity Series) competitors began looking at alternatives from the 5-litre based (311 cu in (5.1 L) engines, as in short track racing there was a push for six-cylinder engines to save on costs, with some series allowing weight breaks.