Hello I am new to the idea of tuning the factory TBI and have been cruising this board for awhile. One question I have in my head is "What are the limits of cam size/vacuum signal that will work with the map sensor in this type of fuel injection?" I am not looking for something radical, just a peppy truck engine that will pull a load.

Plan so far
350 block bored .030 (already finished)
383 kit with 6 inch rods (already have)
afr 195 heads 75cc chambers (to give 9.5 to 1 compression) or equivalent due to the price of AFR's
Roller Cam (no size determined yet)
Good long tube headers and dual exhaust.

Any other thoughts would be welcome. Truck has the 1227747 PCM I believe