What rockers came on M&A heads?

[Black Car]

The M&A that I bought used had Scorpion (sp) 1.5 ratio on them.
These are stud type rockers.
What or how much advantage is the 1.65 over the 1.5 ratio?

TIA,
Gary

 

[StagedGN]

yes their stud type rockers.The bigger ratio will reflect in an increase of you cam profile.but its not usually worth the expense.