AMC th400 experts...bushing for the crank?
Okay all of you AMC th400 experts, here's my situation. Some of you may remember last summer I posted some questions about cracking flexplates on my th400. I'm a slow learner and now...7 months later and 1 more busted flexplate...I think I've figured out my problem. [img]/wwwthreads_images/icons/smile.gif[/img] jjc mentioned this as a possibilty back then.
The inside diameter of my crank is 1.81
The outside diameter of the pilot hub on my convertor is 1.70
SO...when I'm bolting this back together the convertor hub is resting on the lower lip of the crank and is not properly centered...hence the vibration and early failure.
Now, I've been told by Art Carr Performance (real helpful guys) that AMC cranks appear to have come in two varieties, one with about a 1.71 i.d. that th400 convertors matched up with fine and another with a 1.81 i.d. that 727 convertors matched up with. There apparently, is also a thin bushing that AMC used to make the 1.81 i.d cranks accept the th400 convertors. I NEED ONE OF THOSE BUSHINGS!. Of course, the dealership has no clue. My local tranny guy is no help. Art Carr doesn't have anything like that.
Anybody heard of one of these bushings before?? Better yet, anyone know where I can get one??? Any other suggestions?
77 CJ7, D44s, Detroits, 4:27s, 35 SSRs, HS9500i
84 CJ8, 33s, REP8000