[ss3011]

Two things to look at. Make sure the oil level is correctly set. Too high of an oil level might cause the oil to come out the breather. Make sure you have the correct dipstick and tube for the type of pan you have. Factory Deep pans are to lower the oil level, not increase the amount of oil. Deep pan transmissions from the factory get different dipsticks, and tubes that lower the hot full mark on the stick, compared to the pan flange. Also another typical source of oil out the breather comes from cross leaks across the pump halves. Those surfaces are bolted together, and need to be flat, so they seal on each other. If the breather passage in the pump gets flooded with line pressure oil, or converter feed oil, it can over load the circuit, and the extra will blow out the breather. You could also put a small line on the breather fitting, and run it into a vented plastic bottle tie wrapped to the transmission crossmember, that will help keep the overflow off the track or garage floor.