360 build questions

If I zero deck the Pistons will I need shorter than stock pushrods? I do have a set of blackjack headers with 1 5/8 tubes, and I will get the heads cleaned up with a 3 angle valve job. I've had this car and theses parts in storage for the last 24 years so I've been out of the game so to speak for a while now but I'm back into it to finally get this car on the road.