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RED FLAG: 1.5 or 1.7? Mixing up engine "families". What engine are we talking about? Small block Chevy? They use 1.5 or 1.6:1 rockers (multiply "lobe lift" by rocker ratio to attain actual "lift at the valve"). Big blocks use 1.73:1. Small Fords are 1.6 or 1.7. Pontiacs are 1.5 or 1.65... Of course there ARE variations, but these are the "common" ones.
Like Bogie says, a LOT more here than meets the eye.
Jim
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