I see that

Pre '68 - 145ft/lbs
'68-72 - 22-28 ft/lbs.
You will note also that '68 and on they want the rear of the 3 piece torqued at the 145 of the earlier versions.. I believe that is so one side of the intermediate shaft is locked tighter than the other b.c they want the shaft to stay centered. [ they require equal distant on each end at installation]

__________________
A Dalton