jerry, im runnin the 87 transmission, 112 octane Sunoco, and its runnin really rich, its backed off on main just enough to pull 4th,5th gear with no sputter, i can already tel its gona pull the gear pretty easily.. I might end up having to lean it alittle for Saturday though, its callin for 75 degrees out and it was around 55-60 when i tuned last time