Nascar

[TheEnemy]

I was watching Spike Sunday morning, and they featured a car that had real good aero that was to be used at NASCAR, until the rules changed and they canceled the project.

Stock car racing - Wikipedia, the free encyclopedia

The first couple of sections are pretty informative, and probably had a huge effect on what is available.

[TheEnemy]

For example fuel injection was banned even before it could race in 1957.

in spite of the fact that several competing engines were more advanced, the aerodynamic and low-slung Hudson Hornet managed to win in 1951, 1952, and 1953 with a 308 cu.in. (5.0 L) inline 6-cylinder that used an old-style flathead engine, proving there was more to winning than just a more powerful engine.

The 1969 season featured the Dodge Daytona with a radical body shape change[citation needed]. This car exceeded 200 mph (321 km/h) which was a significant improvement over their competitors, 180 mph (289 km/h) was common at the time. Richard Petty could not come to contractual terms with Dodge before the 1969 season, but when he saw the Daytona, he demanded that Plymouth make something similar, but they declined (for the time being). He signed a lucrative deal with Ford, and they made the Torino "Talladega" which had enough aerodynamic body improvements that it gave the Torino a higher top speed with no other changes. NASCAR feared that these increasing speeds significantly surpassed the abilities of the tire technology of the day, and it would undoubtedly increase the number of gruesome wrecks that were occurring. As a result, the 1970 Homologation rules were changed so that one car for every two U.S. dealers had to be built for sale to the public to qualify, hoping to delay the use of aero-bodies until tires could improve.

[tjts1]

They're bringing in EFI for 2012 I think. Thats all I know about nascar