official gear size for 35\'s with a 700R4, post OK, first lets all keep a cool head. I'm not trying to start a flame war I would just like to discuss it as there seems to be quite a bit of rage on this topic plus I will be doing it soon. Secondly, lets assume that the torque converter locks up when it is supposed to. Third, lets also assume that the TV cable is adjusted for proper shifting points. And if somebody knows what those shift points are please elaborate. Mine hits third at about 35 and won't go into overdrive until 65. It shifts firm though. fourth, will assume that this rig spends more of its time on the road then off. let's say 70/30 split. fifth, we will also assume that the 350 engine runs decent is stock and under 100,000 miles. sixth, one last thing. Mileage is important. Tire size 35" x 15.5 x 15 which according to interco website is 34.8" outside diameter. If somebody has this size tire on now would they be so kind as to measure the roll out with say, how does 20 p.s.i. sound? I believe to get a real good idea of tire size you need to know the roll out. The entire drive train, 350, 700r4, np208, 14 bolt in the rear and a 10 or D44 up front. Again this is more of a highway rig that sees a little offroad use. Anybody have an approximate weight? In my "OPINION" 4.56 gears would be good for a rig that would mostly be on the road. This is just my opinion and I don't know the exact roll out and all the other things that would be of consequence for making this decision. According to my calcs (without tire roll out) 2000 rpms would be cruising at about 65 mph in overdrive. 2300 rpms at about 75. If my numbers are off please let me know. <FORM METHOD=POST ACTION="http://coloradok5.com/forums/dopoll.php"><INPUT TYPE=HIDDEN NAME="pollname" VALUE="1067471700cybrfire"> Gear you would use. <input type="radio" name="option" value="1" />4.10 <input type="radio" name="option" value="2" />4.56 <input type="radio" name="option" value="3" />4.88 <input type="radio" name="option" value="4" />5.13 <INPUT TYPE=Submit NAME=Submit VALUE="Submit vote" class="buttons"></form> maybe we can get a good baseline here and people can consider what mods they have made and decide accordingly.