Why keep the engines even?
Manufacturers go racing to do two things, promote the brand and develop new technology. Since the cars are just sticker kit facsimiles of the original, that leaves option #2 which NASCAR has eliminated through their rule book.
Even with the carbs, NASCAR goes back and takes away any gains the manufacturers make because they don't think progress is fair. All they do is make the teams spend even more money on R&D to make tiny gains that only last the week or two until the sanctioning body figures it out.
It is a waste of time, that is why the big three are reducing their funding andthe last few years and may soon start finding their way out of "stock" car racing all together.
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