From the looks of it, you are using IFR values for 3 bar 42# injectors. With GM being 58#, 4 bar, you need to bump up your IFR tables.

As far as STFT/LTFT, if you are in OL, trims are not being influenced by 02's. Could your MAF still be functioning and not in SD? MAF or 02's functioning pretty much make ve tuning a waste of time.

Personally, I liked my cam 224/228-114 with xer lobes. I would have gone to 228/232 with afr 205 heads I had but I worried about PTV clearance. I just thought that size cam was about perfect for a street motor of this size. JMO