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GMT800ToolBox

@gmt800toolbox

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Bill brought us his rare and beautifully done 2001 stepside Sierra RCSB for our custom Dyno tuning. Originally a 4.8, this rig is now packin essentially an LS3 with a mild GM “hotcam”, built 4L60 transmission, little converter, 3.73 axle ratio, and in 2nd gear spit out a healthy 405rwhp/380rwtq 💪🏻😎 Gorgeous and well done rig with some period correct goodies, that’s sure to make the GMT800 crowd’s eyes and ears as well as the rear tires light up 🤩🤤🛻💨 #gmt800 #hptuners #dynojet #lsxcanada #topgunmotorsportss @lsx_canada @diagolopes
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