General 370 motor question

[ChILd_ReBoRn]

Hello gals and guys. What is the best 370 brushed motor out there??

I've bought some jgy370 worm gear driven gearboxes for my dozer, but I'm scared that they'll have insufficient torque. I'm running 40 RPM which is nominal. Anything slower (with more torque) would just be too slow.

So, If the torque is insufficient, what are my options? I need a stronger motor with a 2mm shaft (so I can use the worm gear provided).

If there aren't any stronger (brushed) 370 motors, I could upgrade to 380 or 540 even, but that leaves me with a 2,3mm shaft, and a new worm gear. How to measure the old worm gear size? not sure how it's called in english, but how to measure the worm "stroke" or teeth count or something? I could source new 2,3mm worm gears, but ( is the word "pitch" the one I'm looking for?) not sure will they mesh with the spur gear the way they should....

thank you