Anyone use 1.7 ratio rocker arms???

Assuming 1.7 rockers will make more HP is a big mistake. Every engine combination is going to be different when it comes to rocker ratios. Some will make more power, some might lose power.
As I alluded to earlier, more load on the prods [ more deflection: loss of lift & area under the curve], more valve spring needed, less V to P clearance, closer to coil bind, reduced retainer to guide clearance.
All of these parameters may be ok, but they should be thought about...& checked.