And one of the reasons that the Prod lap records may not be that impressive is that for a long time, all a lot of those folks have worried about is 1 race a year. The idea of people running mule motors did not spring out of thin air.
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I know this is true, as I talked to more then one driver while researching my prod effort. They run a "warm" IT motor during the season. A little cam and a little compression. They save the custom one off high $$ motor for the big show, the sprints and the runoffs. They told me I would easy qualify for a runoff spot with a IT motor. That struck me as odd, but my car goes on a big diet when it goes to FP, and gets stuff like disc brakes. I figured that alone would make me do well enough to get to the show with an IT type motor, Thats why I have an FP and IT motor on stands in my shop.
I got a handfull of prod guys telling me this, at the runoffs no less, and the summer nat at HPT.
Edit: To add a response to Bill's note
I don't think that IT cars are hard to police. I think this is another perception, I also think this has been used as an excuse to open some items up. One other good thing about a "test" season, run it and see the problems that develope.