Front End Frame Geometry
I'm asking this question since I'm trying to set up a parts correspondence list for frames, motor perches, and front suspension parts.
-David
I will mention that on some years the rear most cab mounts are inside the frame rails, in the "X" Member, and on others they are outside the frame rails on "out riggers", But there are indentations or "bosses" stamped in cab floors for the inboard holes. Or the outrigger brackets can be installed on the inboard frame designed units. . . . .
For all intents & purposes, the frames are virtually the same which is why so many upgrade parts, such as steering boxes, Twin I beam systems, radius arms engine mount systems, steering linkage and so forth will interchange within thses years.
FWIW much of this can be figured out from Hollanders Interchange manuals, and/or by reading FoMoCo Parts books & then comparing part numbers. . . .
FBp


