Caterpillar 637K vs Caterpillar 657G

	Caterpillar Caterpillar 637K	Caterpillar Caterpillar 657G
Operating weight	—	—
Engine power	—	—
Heaped capacity	≈26 m³ (34 yd³)	≈33 m³ (44 yd³)
Configuration	Twin engine, push-pull capable	Twin engine, push-pull capable
Rated load	—	≈43,000 kg (95,000 lb)
Strengths	+ Excellent traction + Push-pull loading	+ Huge capacity for mass earthmoving + Push-pull capability
Watch-outs	− High running cost	− Only economical on very large projects
	Full 637K review	Full 657G review

Specifications are typical figures for standard configurations and may be measured differently by each manufacturer (for example net vs gross power). Always confirm with the manufacturer or dealer. Build another comparison.