Quote:
Originally Posted by enkeivette
BTW, I could agree that your car might do better at 75 mph than at 90mph but I'm willing to bet that your C6 will get better gas mileage at 75 mph than it would at 55mph. I don't think your LS2 would be very happy with a 3.73 diff ratio and a .5 OD. 
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I bet you're wrong. I bet his car would get better mileage at 55 mph than 75 mph.