Hi all.

I've run into some trouble trying to remove my engine.

The transmission shift linkage cone screw is severely ceased and the allen nut was rounded.

I tried liquid wrench, cutting a slot and using a screw driver, heat, welding a nut (it just fell off every time), beating a torx bit into it and that stripped the rest of it.

Any other ideas?

you can try an easy out bit. I have had a few parts cars in the past that I had to drill out the screw.

I'd try a left hand drill or easy out...might have to pony up and get some replacement parts if you mess up too badly.

Try drilling out with a left hand bit.

BTDT - I tried it all and ended up buying a new connector after drilling through it.

Agreed. I had to drill out the screw completely. Had to replace the shift coupler.

you guys should send me your ovaled out/destroyed connectors...
I'd pay shipping and put them to good use
brant

I've repaired the tapered section with epoxy, you can use a new set screw as the pattern.

Hammer in a torx bit the of the first size that won't fit. Use a little heat, and back it out.

I had a similar problem. I used an Easy-Out, but had to drill the cone screw in order to get the right size hole so it would bite. I ended up with the cone piece still in front shirt rod and had to drill that out separately after I slid the coupler off. Fortunately, new cone screws are readily available and I didn't mess up the threads in the coupler.