Hello, I recently drove a 6.6 trans at (403 Oldsmobile). We were 3 people in the vehicle (all light weight) and when I started I had kicked the accelerator completely through and I thought that the tires do at least half a turn, but nothing. Since I have little idea of these old engines is my question about you, is that normal, or lacks the engine compression or something like that. Thanks already for your answers.