Power loss over 6,000 rpm

Cam is a 110 lobe separation, installed at 107* centerline.

The springs are rated:
Seat Load: [email protected]" ;Open Load: [email protected]" ; Rate (lbs/in): 402. They are installed at 1.66" height.

In a couple of days I will throw the old 750 carb on it and see if that makes a difference.

I was pretty close. I used 106° and 110°. No choices for valve springs.