Machine description: CATERPILLAR 623B ELEVATING SCRAPER, WELL MAINTAINED AND SERVICED, STRONG CAT 3406 6-CYL TURBO 330 HP ENGINE, GOOD 8 SPEED POWERSHIFT TRANSMISSION, NEW YOKOHAMA TIRES ON FRONT, FAIR TO GOOD ON REAR AT ... more info about the 1976 Caterpillar 623B.