I got issues!

Gears are 2.72s i think but i have n 8.75 with 3.91s
Converter is stock
I didnt get the idle timing, i read some to let it fall where it falls total at 3k was more important?
Vac advance is hooked to ported vac port
Cam is Summit SUM-K50052

It runs decent at a light cruise from stop and gradually get into it but if you leave at wot it pops and carries on n tries to shut off