trans info needed

1. by rebuilding it using premium clutch discs and/or kolene steel plates. Adding a shift improver kit or manual valve body. Those are the very basics but the list can go on and on.

2. Sounds like a stock converter cause they will jerk hard when dropped in gear at that rpm. They are designed to be dropped in gear at a much lower rpm. But to test it there are a few methods. First is come to a stop and brake torque it and watch the tach and see how high the rpm's go. That's called brake stall. Second is to stop and quickly floor it while watching the tach and see how high it jumps up to. That's called the flash stall. Another way to measure flash stall that's a little more accurate is by driving slow in 3rd gear (10 to 15 mph) and flooring it while watching the tach again to see how high it does. If the transmission wants to kick down into a lower gear while doing this you need to unhook the throttle pressure linkage for the test but make sure you hook it up again immediately after the test cause driving without it can burn the trans. up.

3. What is leaking?