Timing lights

If the stock damper is 7.5 inches...

the 7.5 x 3.14159 = 23.561925 circumference divided by 360 degrees = 0.0654497917 inches per degree....

so if you want 36 degrees...36 x 0.0654497917 = 2.3561925 inches on the damper......

and I thought my mom called be son cause I was so bright...lol