Heads

The motor I am building is apperantly a 400 ci. At least it seems to have 400 heads on it. Longer push rods and push rod guide plates.
I installed the rocker arms that matched the pushrods in the catalog.
We are using I understand a stock grind cam. Not as previously stated a Ram Air cam
I have 2 questions.
(1) What is the advantage to the 1.65 vs 1.5 rocker arm ratio.
(2) The cylinder heads have a 94 cast on the center ehxaust port. We find a "93" in the manual that we have. But no "94".
Any help would be appriciated.

David, the advantage in using 1.65 rockers would an increase in lift and additional duration also. The "94" heads are from a 1971 350 motor...hope this helps.......Joe