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Join Date: Feb 2006
Location: Bonham , N.E.Texas
Re: TH400 issues
push/pull on the shift shaft where it enters trans, should be no movement. If it moves , the finishing nail that retains the shaft to the case is missing and the connecting link has come off.
Next likely is splines in convertor and/or the splines on input shaft are stripped
Iff you have to remove trans , make sure the stator splines(fixed spline on ft -part of pump) are blued-heat treated. If not, replace pump with hardened spline version. That spline would wear on the early units
New paint -near complete
66 SS 396. now 427
4sp w/GV, AC,PS,3.31 Posi,ft disc,11" r drum
86 Buick Grand National
89 K25 Suburban that I bought new,is new again
And a bunch of other junk.