it was a 426hp v-8 camaro and a duramnax with a tuner...both ran 13 seconds. the duramax was a 4 door and had a better 0 to 60 time. if the truck wasnt a 4 dooor it would have spanked it. i have run cummins and one powerstroke so im not a duramax freak. im sure 4wd helps it launch.