your log is only 7 minutes of non-moving idle, that won't do much good to actual tuning (unless all you want to tune is hot idle)

what 160 BLM means is that the computer is trying to add more fuel, and it has to dump so much fuel (at least 25% more) that it gives up. this is because it's interpreting your very low o2 voltage as 'lean'.

run my 'cl performance' analyzer:

your O2 sensors never exceed 700mv and are only generating 136 cross counts for 3100+ events. this isn't normal.

either you have a massive vacuum leak at idle, a massive exhaust leak, you need more idle fuel (maybe a constant is way out), or your o2s are not behaving correctly.

i looked at your bin, are you actually running 37lb injectors? i also think your cylinder volume constant is a bit high, i usually use ~7.85-7.90 for a 383 and you have 7.97.

i might try just lowering your injector constant slightly until it doesn't peg BLMs at 160, then you can log and tune from there?