I worked on a 48 ford flattie and had it bored .040 over with edelbrock heads. Running 2 98's. Question is that the most oil pressure I can get is 30 lbs. which seems to work with this engine. I was told that the later engines used a heavier spring on the relief valve. Does this work since looking at the spring it is heavier and will I need to use this? 30 lbs. is not much and I like to get it up to 50 if possible.