hardtobe wrote:
There are only a few 500 mile Nascar races these days and one 600 mile one and its not because of engines.its more with TV,fans, etc etc
If race is too long you loose your viewing audience etc
and besides what does it have to do with gas verses diesel??
You can build a 900HP 360 c.i. engine that will push that 18,000 lb. motorhome over 100 mph, but it will not last very long.
I have seen many NASCAR engines fail in those races. It did seem there were less engine failures last year though. Mostly broken valve springs.