I am working a 56 Victoria. Probably not an original engine. The distributor is frozen in the block. What is the best way to break it loose?

i agree with b blue,tho for different reason,the dist is aluminum and will expand more than cast iron.try packing ice around the base for a few hrs. they can be mean to get out. if you get it out a newer 1 with a ring they have more clearance, or get a bit off where the dist goes into the block. and us a gasket as it may leak with the increased clearance

I have used a co2 fire extinguisher with some light taps works like a charm . Aim right out the base and give it a good shot

NEVER NEVER put a gasket between the distributor and the block.In fords service manual it states that the measurement from bottom of gear to housing shoulder has a .005" tolerance.Using a gasket under the distributor will mess up that measurement.

Same thing for an "O" Ring on the Housing. There is a Groove for One but not used in this Case.