Are you looking for the the measurement at the clutch disk centre, at the splines? I checked a series 9.5 inch clutch plate and it was 1.125.
Originally Posted by wertz=rover
looking for clutch input diameter. not sure if it is 1 1/8" or 1/16" diameter. need to know so I can look at different clutch, gearbox and tranfer case, engine combinations. looked over the web and could not get a straight answer. any help would be great.