1974 auto-stick we need little help Please.

[skatevw]

Ok, I thought I had this 1974 Auto-stick finally working right, and so got in, started out driving. Got about 5 minutes into the drive, when I shifted to 3rd it just revved up motor and would not go anywhere? I stopped it and then tryed shifting to ANY GEAR, It just moved around to all spots of shifting, but would not go anywhere? I pushed it back home, and next day got out, started it, and everything seemed fine? I am now afraid to drive anywhere that I cant push it back, lol.
WHAT HAPPENED ANYONE???

[volkenstein]

skatevw,
        Low cost and High effort options.  1st things first is check your ATF level and whether is smells burnt.
Look carefully and check whether you can see ATF seeping/leaking.
Check your entire vacuum system for leaks.

Probably best to drop the engine and drop the trans. It'll cost you a new trans seal (maybe). Separate the bell housing from the trans and have a look at the plate. You'll be up for GB oil (two nuts inside GB case means pan off) as well as some form of Dexron ATF. A lot of cursing and swearing are no-charge   .

Re-assembly is another matter entirely - DO NOT REMOVE THE CLUTCH ARM off the trans!

Not much help but that slipping sounds heat/oil related.

Volkenstein