How to figure a camshaft's lift

This is a fairly simple thing to do.

Dial calapiers and a basic calculator and paper and pencil is what is needed.

First is to measure the cans base circle.
The base circle will be the smallest measurement.

You must be logged in to view this image or video.

This was 1.181 on this cam

Next is the Toe measurment is next and will be the largest.

You must be logged in to view this image or video.

1.417 here.

Now for the math.

Toe - Base = Cam lift

1.417 - 1.181 = .236

Now gross lift, is the distance the valve moves off the valve seat.

1.7:1 is the rocker ratio
I have also read that the rocker ratio is 1.73:1

Now take the cam lift and multiply it by the rocker ratio to figure gross lift of the cam.

1.7 x .236 =.4012

Now since the 4g63 is a "metric engine" and most all specs are in mm.
To convert the gross lift to mm

25.4 x .4012 = 10.19mm