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By 1972, 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). [47] The transition was not complete until 1974 and coincided with American manufacturers ending factory support of racing and the 1973 oil crisis .
In 1975, NASCAR reduced the maximum small block engine displacement from 366 cubic inches (6.0 liters) to its present 358 cubic inches (5.9 liters). The transition was not complete until 1977 and coincided with American manufacturers ending factory support of racing and the 1973 oil crisis .
At the beginning of the 1971 season, NASCAR limited an engine's cubic inch displacement. [21] The reductions had the effect of reducing costs for teams, but also limiting the horsepower and top speeds of NASCAR teams. [22] At the time, NASCAR founder Bill France Sr. stated:
Engine displacement: 5.86 L (358 cu in) built or 376 cubic inch (6.2 L) Chevrolet LSX NT1 crate Pushrod V8 Transmission : 4-speed manual Weight : 3,200 lb (1,451 kg ) minimum without driver and fuel; 3,400 lb (1,542 kg ) minimum with driver and fuel
After the 1970 season, NASCAR effectively banned the "aero cars" by restricting all five of these "production" cars to having to compete with engines no larger than 305 cubic inches of displacement (vs. the 426, 427, & 429 cubic inches other cars could use), and the competitive history of the Talladega (and its aerodynamically developed rivals ...
358 cubic inches (5,870 cc) Fuel: Unocal 76 110 (1992-2003) Sunoco ... The Generation 4 car was the NASCAR vehicle generation used from 1992 to 2007 full-time in ...
NASCAR's rules implemented for the 1971 season limited the "aero-cars" to an engine displacement of no greater than 305 cu in (5.00 L) or they had to carry much more weight compared to their competitors. While they were still legal to race, the power-to-weight consequences that would come with the smaller engine or the increased weight rendered ...
NASCAR logo. The National Association for Stock Car Auto Racing (NASCAR) makes and enforces numerous rules and regulations that transcend all racing series.. NASCAR issues a different rule book for each racing series; however, rule books are published exclusively for NASCAR members and are not made available to the public. [1]