Calculating Overlap

285+295=580
580÷4=145
145-110=35
35×2=70
In this example it's the same, but I'm curious what would the differences mean? I'm still trying to learn.
PRH said
I use a variation of what they’re doing.
I use advertised intake duration + exhaust duration, divided by 2, minus 2 times the lsa.
Let’s say you have a cam that’s 285/295-110.
285 + 295/2 = 290
290 - 220(110x2)= 70 overlap
Click to expand...