Hey guys! Here is a question to throw out there. Anyone running a 350 with a TH400 Tranny and 3.08 gears in the back?!?! I am hearing from select people that have run this setup in past years that the gas mileage is around 17-city and 24-interstate...If its anywhere near that I am very interested...Even a comparison with others may be helpful in my case...Here is my setup and gas mileage. My guzzler is a 2wd 350 paired with a TH350Tranny and 2.73 gears in the back and I get 10.5MPG--city and 12 flat on the highway.(with a light foot) This sounds like 4x4 gas mileage to me and this is running stock street tires p235/r15/75 and 87octane gas(my baby gets nice treatment--besides that I find it runs best on 87) My carb is a Q-jet and from other post I read I see that the Q-jet is the best carb as far as gas mileage. Also I have a Flowmaster 2 chamber straight pipes no cat. which actually bumped my mileage up from what it used to be..also I hear that you can by a push button bolt up overdrive for the TH 350 transmission anyone heard of this?