Help pick stall speed.

[ss dave]

Example, WOT @ 6K in 1st, shift to 2nd- no spin, the motor has plenty of low end tq and power, est. peak tq 4500. The first converter was rated at approx max hp 450 but had a stall at prob. 2500 and could get the tires loose. This converter never seems to lock up solid except with OD. Motor hits fine, replaced clutch pack in tranny last convert change. rest of tranny good, rear end- no problems. My mechanic states that the converter is absorbing the tq and not transfering the power. The converter is from a reputable builder, 9.5" Precision Industries.