by Tim Palmer
Several members with early 4-speeds have been talking about many shims they have needed to properly align the rear wheels. It turns out many did not know a spacer that is supposed to be on the driver's side big bolt. This spacer is not shown in the shop manual or the parts book. It is shown in the assembly manual. The one off my 63 is 7/16“ thick with a 1/2” ID and 1“OD if you need to make one. The assembly manual shows round spacers on 63 and 64 (3833299) and a square one for 61 and 62 (3785284). I haven't confirmed the 61 and 62 size or shape as yet.