I have finally finished one of my main goals for my F*ing Truck. I just totally have wrapped up my T56 swap from my 5 speed. I just finished up the last of the exhaust that needed to be reworked with the x pipe. Seen as my driveshaft snapping started this whole process and destroyed my muffler. It is amazing how shitty my truck sounded with out the same bends as it had. Truck is running great, have been through all of the gears and trying to figure out speeds due to the speedometer being off. This is what I am needing help with does anyone know how I can recalobrate? When I am shifting out of first gear, my speedometer says I am doing 35mph when I am actually doing 50mph. Second gear is 55mph and actually is 75mph. Third gear is 70mph and actually and I think I am around 105mph, but I am not sure due to the fact my Yukon shuts down at 95mph and my girlfriend couldn't keep up. I have actually already tried to change with my HP3 Tuner but, my dinosaur tuner will not compensate. Please help if you have any ideas?! Thanks.

 

Off topic...but what in the hell is that green furry stuff that is all over your truck? Your truck looks and sits good...but that fur is insane.

 

I started as a joke, but it is an attention getter when you see it as you walk by... it is all going to be replaced with green suade the same color.