Attn - Old Fella and Dan Winterland
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You gentlemen both are correct but might have "fat fingers" at times.
I am careful when typing numbers, as some of our friends here study/verify numbers from "their books".
As you know, I deal with training (often on contract) and I have been exposed to many weight options.
Besides all that, some of my many Boeing AOM editions are in kilos, others come in pounds.
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747-200/300 WEIGHT OPTIONS -
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Max Taxi/Ramp Weights My notes from Boeing all give a difference of 3,000 lbs (1,360 kilos) between the Max Ramp and Max T/O weight.
One ridiculous difference - A 200F I had, showed 8,000 lbs difference, between Ramp and Max T/O.
Boeing engineering told me that it was the case of planes that had 805,000 MTOGW reduced to 800,000 lbs.
But they kept 808,000 Max Ramp Weight...!
Nice for taxi at JFK when you have to queue for 2 hours...
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MAX T/O WEIGHT The original 200s were certificated to 351,534 kilos (or 775,000 lbs). Was the case of QF's VH-EBA.
Soon that weight was increased to 356,069 kilos (or 785,000 lbs). Soon was offered on 200F then pax planes).
Many 200s (and the first 300s) were offered with 362,873 kilos (or 800,000 lbs) option.
Again, 200F were later increased to 371,945 kilos (820,000 lbs) option.
And finally the 200/300s were offered at 377,842 kilos (833,000 lbs).
NO CLASSICS ARE HEAVIER.
Dan's typing 391,945 kilos as a weight for a 200F is a mistyping of 371.945.
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MAX ZFW The original 200s (passenger) were limited to 238,816 kilos (526,500 lbs).
Same as the 100s were...!
That was quickly increased to 242,671 kilos (535,000 lbs)...
The Combis (SCD) with 9 pallets (Cabin E Combis) had MZFW at 247,207 kilos (or 545,000 lbs).
The Combis (SCD) with 13 pallets (Cabin D+E Combis) MZFW were 256,279 kilos (or 565,000 lbs).
All 200F or 200C cargo planes had their MZFW increased to 267,619 kilos (or 590,000 lbs).
There was even an option to bring the MZFW to 281,680 kilos (or 621,000 lbs) with CG envelope restrictions.
I recall that one with Cargolux 747-271C and some El-Al 258Cs as well.
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MAX LANDING WEIGHT With weight increases, expect many options for landing weights.
The early 200 passenger planes (and 300s) were certificated to 265,351 kilos or 585,000 lbs).
Then the 200/300s (includes freighters) got the Max Landing at 285,762 kilos (or 630,000 lbs).
And those few planes with the extra heavy ZFW got 302,092 kilos (or 666,000 lbs) as langing limit.
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Compare the numbers to your manuals, you will recognize your airline's figures in some.
I save you the numbers for 100s, or the SP...
It does not matter which engines. JT9, CF6 or RB211 were available for all options.
Took me years of flying the 747, and teaching them to compile the weight options.
Make a note, as I am retiring next month, and throwing all that in the rubbish...!
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Happy contrails