Quote:

the stamped steels i've measured using a solid tappet, adjustable push rod, and checking valve spring were 1.5. all 1.5 adjustables i've measured, using the above mentioned method, were 1.6. all 1.6's i've measured were 1.65-1.66. going from a true 1.5 ratio to a true 1.6 will add about 5-7 degrees duration at .200 lobe lift, nearly nothing at .050 lobe lift; on the average flat tappet cam. and thats my story and i'm sticking to it.

You want to see a surprising change in your measurement. Get rid of the solid lifter, Take hyd. lifter and shim the plunger to the pre load that you will be using then measure the liftratio. You will be surprised and the difference due to depth of the push rod in the lifter and angle change. You will find that unless using solid lifter on a solid cam with the rocker adjusted to spec. you will be very inaccurtate on a hydraulic cam using the solid lifter.