First I tell a little story about what made me post this, but if you don't care skip to the next paragraph. Not sure where this should have gone. I don't want it to just cover nascar, but relocate to where neccesary.
After my junior year in high school I worked as a surveyor, leaving every monday from Tennessee togo to Mississippi. We were doing center line surveying for power lines, so my jobs was to cut a clear line of site for the gun, which I must say was the hardest job I have ever had, I didn't get paid that much(6.50/hr + expenses as in all my meals, and drinks except beer, or anyother alcohol. normally around 48 hours a week, while only working monday through thursday including travel time which was paid), but it was great experience, and I had alot of fun at night in the hotels with the crews.
They were all a bunch of rednecks, but entertaining. The crew chief was huge in Nascar, but he told me some about this one guy(can't remember his name) that raced back in the 1970s, and was responsible for many of nascars rules. Here are some of the methods he used: extremly long fuel line, so his car could hold more gas. Supposedly the fuel line wrapped around the car and through the car numerous time making it hold somewhere around 10 gallons more, He put a special bottom on the gas can so that when it was inverted the bottom would flip down, and the gas would dump into the tank all at once instead of having to glug with air bubble wirking up, had a bag of heavy ball bearings(making him make weight that would slowly empty durring the race eventually making hime drop a hundred pounds or so.
I found these pretty clever, and funny. At the time most of his tricks weren't agains the rules and nascar had to respond with new rules, and nascar has an entire room or something like that of things confiscated from him. Post any other old cheater's methods that are clever.
Peace