Solid Roller camshaft selection those of you running a 408 race application

Solid Roller camshaft selection those of you running a 408 race application - lobe seperation

rumblefish360 said
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.

Very true with the four inch crank. I've seen that Vizard states in his seminars a positive correction factor of 0.75 for each point of compression over 10.5:1 and 0.5 of positive correction to LSA for each tenth of rocker ratio increase. So with 12.25:1 as stated by the OP, 1.3 degrees more of LSA. Anywhere from 106 to 108 should be in the sweet spot.