1.43 to 1,is the ratio for Shovel Head rocker arms.
The ratio of 1.5 to 1 for Pan Head rocker arms.
I have been told,that there is another ratio for Pans.
Maybe the same as the Shovel, this was used on the '65 Eltra Glide. That would be the 1.43 to 1.
If any one else has rocker ratio info please post it.
I have tried to find any differance in the angle in the block bore, and I can't see any.
Have checked early Pan(aluminum)blocks against later steel Pan, and Shovel blocks.
The only Evo blocks I have are in use.
I CELERITER TEMPUS DEFICIT.........