"Does anyone know if the Piston compression height (calculated to be 1.375" puts the pin into the oil ring land ..?"

All I can tell you for sure is, that my 4.50" stroke with 7.100 rods put the pin in the oil ring land and requires a support rail. This is not a problem.

Mark



1996 Ram 1500 Sport
1968 road runner
1952 Sears Allstate licensed, pump gas, Hemi 5.98 @ 115.73 1.33 60 ft. The best is yet to come. Painless Performance / Street RODDER magazine Top 100 for 2019