I'm building up a 302 GMC,everyone ,including cam grinders told me the rocker ratio is 1.5.You can carefully measure the rocker pivot points, seems like 1.5
So here I am checking cam timing,and I notice the valve is missing .040 lift when fully open.I set up the indicator on the tappet,.285 just like it's supposed to be.But up at the valve retainer,it's .395. Should be .435 ish.Now nothing is flexing and these measurements are at zero lash. .285 x 1.4 is .399. I compared the sheetmetal GMC rockers to 235/261 Chevy rockers,the same thing.
We are all getting cheated on lift, must be a plot by V-8 guys
