ANSWERS: 2
  • The term doesn't quite have the same significance it used to, does it Jerv. (I know this isn't really an answer, but I wanted to say it).
  • The NASCAR formula for the cars started out as stock. But due to the need for a level playing field to put on a good show, every engine is nearly equal in power and every chassis is nearly equal in traction and cornering. The features you have noted are required to make the vehicles safe (tube frame) but primarily to make regulation of the engine possible. Push rod two valve engines with carburetors are easier to confirm as legal in tech inspection than an overhead cam 4 valve engines with electronic fuel injection. Hence no one runs away with the race season spoiling the show. GM still sells push rod 2 valve V8 engines, does that feel better? I don't believe Toyota ever made such an engine for public purchase. Would America come to a race of front drive V6 powered sedans dominated by one make, probably Honda? NO SHOW

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