Perfect intake centerline

When you install a cam you can advance and retard the timing of the valves to give a lower or higher rpm band for the engine.
You are also changing the cylinder pressure of the engine.

The cam you are using is one of the smaller performance cams from edelbrock.
Edelbrock should be able to give you the (installed degrees)that the cam should be installed at.
Call edelbrock for additional information.

The cam you bought is a small performance cam.
I would use the degree wheel and double check that the INTAKE is at MAXIMUM LIFT a --106 degrees --PAST TOP DEAD CENTER on the INTAKE STROKE with the degree wheel.
If it all lines up good, and everything is correct with the cam and the key way on the sprocket you will see both the dots line up on the cam and crank sprocket.

A cam of this size, i would think would be installed ---strait up-- due to it being a smaller performance camshaft.
Again call edelbrock to be sure and go from there.

I think your original question is about the cams LOBE SEPARATION ANGLE.
This is the measurement of how close both the intake and exhaust lobes are in comparison to each other.

Example:intake center line of 106 degrees.
exhaust center line of 110 degrees.

By adding them together you will have a total of 216 degrees.
Divide the total of your intake and exhaust center lines by 2 and you will get a LOBE SEPARATION ANGLE of 108.

This is a cam ground on a 108 LOBE SEPARATION ANGLE.

This number can not be changed since it is the shape of the cam and how it was manufactured by the cam company.

It is one of the biggest factors of how a engine will perform and it also gives the over lap it's distance.
The over lap is the amount of time both the exhaust valve and intake valve are open at the same time.

A wide lobe separation angle will give a flatter torque band but will make less peak power.
A tighter lobe separation angle will make more torque and horse power but at a narrower power band.

This is why drag race cams sometimes have a tighter LSA and so due good tow cams.
They both give a narrow peak power band.
When working in a narrow peak power band of a drag car or tow vehicle and also some stock engines looking for torque down low, this is exactly what is needed.

It all depends on what usable rpm you want for your engine and the limitations of the cylinder heads air flow compared to the cubic inch and where the torque and horse power will start and stop with each cam you select.

A lot of people miss the boat by picking a cam with a wide lobe separation angle.

It's when you start going to better flowing cylinder heads and larger cubic inches that the lobe separation angle goes higher.

I hope this helps.:cya: