Yes you are correct the edelbrock’s 5845s are a dual spring. I looked at the wrong column, springs per cylinder.
A compcams 978-16 spring would be a better choice than the 5845s. 400 lb/in spring rate versus the 460+ lb/in of the edelbrocks. Ideally you should be 370-400 on your spring rate for the new cam, 150 seat. The 5845’s have quite a bit higher spring rate than you need. Over 130+ higher spring rate than what you have now. Like killing a fly with a hammer. Collapsed lifter waiting to happen.
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