I think you would need to work backwards to try to guess a crew chief's salary. What is an average budget for a fuel team these days, really? $5M? Let's assume that for a minute. No way are you going to be spending 10% of your total yearly budget on one salary. You have so many more mind crushing expenses - 10-15 more salaries, trucks, insurance diesel fuel, parts, tires, nitro, travel, motels, food, uniforms.....The list is never ending. This isn't F1. I would assume any winnings get dispersed as well. Maybe out of winnings 20% goes back into the account. The other 80% gets divided up with X% of that going to the crew chief(s) and the rest going to the crew. Don't really know, just speculating what it costs to run any business. I think it is a very interesting question and wish we had more information on real costs for this crazy sport we love.