Rockers 1.5 ratio or 1.6???????

Moper, you are absolutely correct, I agree with you about the increased 'stress' the higher ratio rockers impart to the valve springs. I was giving an explaination as to why we can't accurately use the standard method of calculating the as installed lift, of our cams . It will not be correct. I don't build my engines with a 'plus or minus' rule...nothing wrong with getting the right number. JMHO.

Terry