Hi all, first post on Oil Burners, I just rode in my buddies 1984 6.9 C6 auto, it shifted into second at around 25-30ish if I remember right, and then into 3rd at around 45-50. I have a 86 F350 with a 7.3IDI the C6 but I shift into second gear at FIVE miles an hour and third at FIFTEEN, this...