Grand Am plays LOTS of games with weight, weight positions, throttle bodies, brakes, and other things to make the cars be fairly equal on the track. Soon as one team gets a clear advantage they make them add weight, restrict airflow, limit tire size...yadayada....Thats why the Continental series race is a crash fest...they get all bunched up and the only way to get position is to barge your way in or bump the next guy off the line. Its pretty fun to watch in person actually.
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