which cam for stroker?

I saw your other post. IMO, I think you should be looking for something closer to the XE274H as a starter. However, as godfather said with your limited heads you may do better to call a custom cam company and see what they recommend. IMO, you need something with duration at .050 of around 250° but the lift will need to be kept mild with stock factory ports. You can go smaller, but these engines do drop off much earlier with small cams and carbs. The 750 dry flowed will work to about 5500 with your combo and I think that might be fine for your build. If you had more head I'd say go with a wet flowed 870cfm carb as bigger will make more power. Smaller will work.