On a 408;
2.02 - 105.02 LSA
2.08 - 105.68 LSA
2.15 - 106.41
For a 434;
2.02 - 103.56
2.08 - 104.26
2.15 - 105.03
A 26 cubic inch difference between the two. Notice how close the numbers are the trend of which they go. About a degree and a half tighter going to a larger engine. So is a 105 to tight? I don’t think adding two more wider is going to kill it.
According to D Vizard which is Chevy math for the 23* angle. Being the MoPar has a 18* angle, you could probably do with 2* less and be fine. 1* won’t show crap.
Take for what it is, an approximate and close.