Originally Posted by Blues Power
just curious as this has nothing to do with your issue but TQ 50-90 is a very very wide margin.
usually its 5 or so either way but 40 sounds way wierd to me.
Such a wide range is normal with castle nuts. You go to the lowest torque, then check to see if the holes line up with the castellations. If not, you can keep tightening up to 40 ft/lbs more to get them aligned.
'65 Coupe, 302, Autolite 4100, C4, 2.80
'72 Grande, 351C, Motorcraft 2100, FMX, 2.75