No. If you were to take, for example, 186 heads with 1.94" intakes, and have them machined for 2.02 intake valve size, then you would also want to ask them to machine to 'unshroud' the valve. Hope that answers your question..
Note: I really like the 1.94" valve heads on the street better than 2.02, as you'd have to be running very high rpms to justify the larger valve size. 1.94" run better and are more efficient for 90% of street driving.