Caterpillar 627K vs Caterpillar 657G

	Caterpillar Caterpillar 627K	Caterpillar Caterpillar 657G
Operating weight	—	—
Engine power	—	—
Heaped capacity	≈18 m³ (24 yd³)	≈33 m³ (44 yd³)
Configuration	Twin engine, push-pull capable	Twin engine, push-pull capable
Engines	Cat C13 (tractor) and C9.3 (scraper)	—
Rated load	—	≈43,000 kg (95,000 lb)
Strengths	+ Excellent traction on grades + Push-pull loading without a dozer + Higher productivity in tough conditions	+ Huge capacity for mass earthmoving + Push-pull capability
Watch-outs	− Higher purchase and running cost than single-engine models	− Only economical on very large projects
	Full 627K 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.