Help me understand.

[notnodak]

Here are the specs I can find for the Ammo motors in question.
Ammo 36-56-1800 motor
SPECS: Motor Diameter: 1.42" (36mm)
Motor Length: 2.2" (56mm)
Shaft Diameter: .197" (5mm)
Shaft Length: .591" (15mm)
kV Rating: 1800 rpm/V
Weight: 10oz (283g)
Input Voltage: 14.8-22.2V
Max. Constant Current: 50A
Max. Surge Current: 90A
Max. Constant Watts: 1110W
No Load Current: 1.9A

ammo 36-56-2600 motor
SPECS: Motor Diameter: 1.42" (36mm)
Motor Length: 2.2" (56mm)
Shaft Diameter: .197" (5mm)
Shaft Length: .591" (15mm)
kV Rating: 2600 rpm/V
Weight: 10oz (283g)
Input Voltage: 11.1-14.8V
Max. Constant Current: 55A
Max. Surge Current: 90A
Max. Constant Watts: 815W
No Load Current: 3.9A


I'm going to put one of these in a E-WideMaxx but I might get a new E-Maxx 3905, they would both be about same wieght or close to a E-Savage.
If the 1800 has a 50amp rating w/1110watts and the 2600 is 55amps w/815watts, wouldn't I be better with the 1800 with 14-cells?
I'm running a pair of Johnson DCM-267: http://www.allelectronics.com/cgi-bi...3-24_VDC_.html and They are good but I want more power.
My concern is I use these with 66t spur and 22t pinion already and I don't want it to be slower. I think these Johnsons are rated at about 1541kv.

Will I see a significant improvement in the 1800 motor or do I need to go with the 2600?