737MAX range

I don't have any data to prove this, but the range of the MAX seems too low compared to the NG's range. It just doesn't work in my mind that an aircraft with a lower fuel burn and same fuel load can fly the same payload at the same or higher MTOW less far.

The -800 uses about 1.16 times the fuel per hour/mile the -8 needs (using AE numbers). As both aircraft are planned to have the same fuel volume, I'd expect the -8 to have 1.16 times the range of the -800, which is 3714 mi.

Similarly, the -7 should have 3642 mi, the -9 4162 mi range with full payload.

Boeing themselves say

"The 737 MAX will extend the Next-Generation 737 range advantage with the capability to fly more than 3,600 nautical miles (6,667 km), an increase of 405-580 nmi (750-1,075 km) over the Next-Generation 737. With a lower operating empty weight than the competition but higher maximum takeoff weights, customers can fly further or carry more payload."

 

but do not publish any payload-range charts.