What's wrong with my setup?

[PAUL-90GT]

I had the car in shop on monday, they took apart the top half and checked the cam to see if it was installed correctly, it was. The only thing he found was that the rockers wernt set properly so he reset them.
when I had car dynoed I had th 30Ib injectors in it, since then i took them out and put back my 19Ib (as per avdice from a lot of people telling me 30ib inj were over kill)
the 19ib should be more then enough for my setup.
just about everything on the engine is new except for bottom half (pistons,rings bearings)
Most of the engine work was done by a friend who races a Nova he built himself so
I'm assuming he did the work rght.
when I called lentech to order a torque converter they asked me about the mods I did to engine and what cam I have in it and based on that info they recommended a 2800 stall TC, i can't see where the TC may be problem.