It will vary how much of a turn you get depending on the length of the pushrods and how they work with that cam. Are you trying to use the stock push rods? Going aftermarket hardened push rods? Do they need to be shorter or longer than stock length? Need to check the valve train geometry to see if they need to be shorter or longer. That's a pretty big jump from a stock cam to a N-41. I've got an N-412 in one of my car's but it has stud mount adjustable rockers. You may need different length push rods.