I don't know about the Trick flow intake but that's not a very big cam , I used to run a home ported Holley Street dominator on a 383 that made lots of torque and pulled up to 7000 on a 383.

I did the same mods to a few 440 SDs my buddy Mark 'GY3' still runs real low 11-oh's on his street driven 493.

I'm almost thinking a big single plane like the TF might be borderline "too much of a good thing" cross-sectionally for your combo. But to answer whether the ports are too small? Maybe/probably not, they probably make it that way deliberately.....because not everybody buying that intake is building a 511 Stroker low deck, there's probably a higher degree of taper (the runners are bigger at the plenum than they are to the head port.)

So not in your case, but a 383 with your combo basic combo but with only say 9.5-10:1 probably wouldn't fall out of a tree with that manifold. Your compression is the key to why your combo works as well as it does.

It's just a guess but I would think you would need at least more cam lift (to really use more of the sweet spot of those heads) before you would overtax the intake.

The carb depends more on the launch speed, if you're launching off the back squirter (assuming you have a double pumper) you could probably run at least an 850.