Chevy Colorado: Built by ‘The Diesel Shop’ Stock long block 6.6 Duramax Stock Allison 6 speed auto tranny Garret gtx4202r turbo Water to air intercooler 15 % bigger injectors EFI Live tuning 660 hp 1125 tq 42 psi R35 GTR: E-85 fuel Full bolt-ons 10.2@136mph 1/4 mile This Colorado Duramax is straight nasty, but is […]