Stuck oil pressure sending unit

[prestonwood9]

Anyone have any recommendations on how to remove stuck oil sending unit? Put a wrench on it with some hammer taps, but was afraid it was going to snap off the unit from the threaded shaft, which I’m pretty sure would be a royal pain to fix. Has anyone tried heat? Was thinking about putting a small blow torch on the engine/base to see if that might help it release? Not sure if the block will soak up to much heat though or if I should use a heat gun instead? Kind of afraid of catching something ablaze back there as well. Thank you all in advance. 1980 350

 

[MarineOne]

Clean that area of block off real good then torch it hot mash a wax candle into base of sensor by threads. After that tap quite well with hammer. Anything beyond that is see what happens

 

[PrairieDrifter]

Ive never broken one taking it apart. I've torn down a lot of engines. Yes you can throw some heat at it, just watch out for the wiring all around that area. A heat gun probably wont do it, if it is that stuck.