All the manufacturers make links for a small range of inter-tappet spans (not one for each motor), since there has to be slack in them to allow for "1 tappet up, 1 tappet down".
If the Olds is very close at 1.877", the other V8s that use the same 1.654" link are probably OK as well, but both are smaller: Chrysler B/RB 1.800", Pontiac 1.818". Your cam lift may be smaller than their designed-in max, allowing for a shorter link to work.
If not, the next wider link is 1.884", used on: AMC V8, Ford FE.
Probably too big: BBC, Ford 385.
Probably too small: SBF, small Buick V8
Just a guess: Buick 400/455 may work.
