Hey guys what's goin' on? I joined up a few days ago and am just now getting around to posting something. I've just gotten a 1995 chevy silverado, extended cab, long bed, C2500 with 66K mi on it. It has the 6.5td, vin F and is stock all the way around. Four speed auto trans and 4.10 gears. On my first tank I got 16mpg and am thinking of changing the gears to 3.73 because I dont do alot of towing and would like some better mileage. I talked to a friend about the swap and he said that I would have to have my computer re-programed to read the correct speed. Anyone know anything about this? Well, I'll catch ya'll later. Tell me what you think.