Converter stall problem or not

[DCVING]

Recently I purchased a Turbo T from a member of the board and from what I was told it has a built tranny done by OTTO and also a 3000 stall converter. I checked the stall by footbraking the car to 0psi and it was stalling at 2075 @ 5psi it was 2280 and @ 10psi it was 2850. I know the engine combo has a little to do with the amount the converter stalls too. Well I changed converters assuming I had a defective unit and replaced it with a newer re-worked d5 that stalled 28-2900 @ 0psi on a car with a stronger combo, my question is, does this sound normal? any info would help!