hey man i already checked my gas milage with the tr224 cam stock tranny 342 gears going 65-80 mph. i drove to work back, its an hour drive from my house to work (120 miles back & forth) and it gave me 20 miles per gallon. to awnser the question you had asked me last time and will give you the track times by this weekend were having truck night friday and i will post them here so you can see them.