Andrew: Sort of but it doesn't leave a mark so can safely be used on the deck surface.
Roy: Not all of the shops here have a tester either and in that case I'd think twice about having $1000's of work done on a head that may or may not be soft/useless..
Frank: 100% Aluminium is not very...
From memory they had an extra ring on the piston.
There was a 366 and a 427 version that each had a .400 taller deck height to accommodate .400 taller pistons using four rings instead of the more usual three rings. These tall-deck engines were used only in medium-duty trucks (NOT in pickup...
I moved this away from Duane's thread as I suspected things would get a little passionate ;)
Having said that my take is the block denotes the engine family as it is the foundation of an engine.
Doesn't matter what internals or head that is on it if it's an xx block it's an xx motor.
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