77xcfalcon

The part number on the pistons generally tell you if it’s oversize. Nothing wrong with over sizing as long as it’s not overboard

I'm with Greg. Zero deck with those pistons and a c2 head would yield very nice compression.  I've taken big hp and torque blocks to .060 and I know others have taken them further so be guided by that. 
Balance is pretty much a must if you want reliable trouble free running on these old girls. Factory tolerance on these things was very wide. 
Id be using that engine as a base for sure, especially if it's fresh. They generally have anything from .045-.050 deck height so giving them a mow, even with the dish pistons, nets good comp. add in a c2 with .040 off it and your in good comp territory if it's .040 over 

Piston choice is pretty limited with these motors as there were no crossys in the USA market.

Upping the comp is best done by decking the block, as this requires the least amount of material removed for a given increase in ratio.

To zero-deck, you should get your pistons first, install without rings, bring each one to TDC and check your deck clearance. The biggest clearance is the amount to be shaved. All other pistons will need skimming down to that height if they differ by more than a couple of thou.

Everything else should be fine if it was a good runner before but just check the bearing shells for even wear, etc. A very light hone will be needed to bed the new rings. Dunno how high you want to rev it but a balance makes a big difference on a long-stroke motor.

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Just wasn’t 100% sure about the history of the car. Wanted to check it all out to be sure, plus it had been sitting for a while. And I want to bump up the compression a bit as well. I thought the best way would be to replace the massive dish pistons that were in it. It had a iron head that I’m replacing as with a alloy. And I’m painting the car so it was coming out anyway.


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What ECU do you have?
 
You'll need to run the dizzy to match the ECU.
 
If it's a Ford ECU from an XF our later you'll need to run the XF type TFI distributor (grey module)
 
If it's the bosch ECU from an XE you'll need the dizzy with the bosch module. The one the other guys have been referring to as solid state.
 
You can probably run points with the bosch ECU but it'll have to be 12 volts.
 
If you have an aftermarket ECU then you need have a look at the manual for that. Most support TFI. But for the bosch dizzy, the black module may need to be removed from under the metal case to get spark control.
 
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found this on my parts car. Looks like it will do what I need


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