I was wondering if anyone could help me out here. I have an '87 r10 w/a 305 700r4 tranny. whats happening is that it wont shift out of 1st gear if i slam on the pedal. If i pull over and put it in reverse then into overdrive, it' ll start shifting again. Before this started happening, it would shift really hard from 1st to 2nd then it would shift fine after that. I'm clueless when it comes to transmissions, so any advice would help. I've asked around locally and keep getting different answers so i was wondering if anyone has had a similar issue. Thanks