48cc on a 250 head to 200 block?

[64 200 ranchero]

to get the stock 65 200 compression on a 77 250 head, not knowing if the head was previously milled would getting it down to 48cc's bring it to my target compression if i use a new felpro head gasket?

 

[JackFish]

http://falconperformance.sundog.net/compcalculator.asp

Number Of Cylinders
Bore Diameter [inches]
Stroke Length [inches]
Combustion Chamber Volume [cubic centimeters]
Head Gasket Compressed Thickness [inches]
Head Gasket Bore Diameter [inches]
Piston To Deck Clearance [inches]
Select Piston Type
Dish/Valve Relief/Dome Volume [positive cubic centimeters]
Volumetric Efficiency:
RPM:

Results:
Displacement, [cubic inches] 199
Displacement, [liters] 3.3
Static compression ratio 9:1
Cubic Feet per Minute required @ 4500 rpm, [cfm] 208
Estimated Horsepower @ 4500 rpm
Assumes altitude of sealevel, barometric pressure of 14.696 and 60° air supply to carburator 120

Yes, even with dished pistons.
But I'm sure you'll have to fiddle with the numbers.