when i rev my car from idle to 2500 ish, there seems to be a rattling noise like plastic rattling around the timing belt area. but idk if it might be a spun rod bearing? the car pulls very strong, could it possibly be the oilpump that's making the noise? thanks in advance.

 

it could be your valve train, have you taken the valve cover or timing cover off? look around a see if there is any kind of unusual wear.