stuck lifters!!????

I soaked the pistons and lifters for weeks with everything except skunk pee, finally drove out the pistons, was able to drive the lifters off the cam with a big screwdriver, except ONE lifter. and, I cannot budge the lifters out of the bores. afraid to put the torch on them.??? 273 solid lifter engine. pics attached/ !! the cyl bores are really clean would ya believe?
any advice!??

Why didn't you clean all of that crap out of it before trying to soak it and disassemble it.

A 3" or 4" wire wheel on a drill would be a good start, then soak the crap out of it to help loosen them.

Then if that doesn't work, hit each lifter bore with a propane torch to let the metal expand and then try to break the lifters loose one at a time.