Computers and Electronics What engine is in a Clark c500 forklift? What engine is in a Clark c500 forklift? Transmission and Engine Specifications The 4-cylinders engine is manufactured by Mitsubishi Motors. The forklift cannot travel at fast speeds as it is designed to travel between 5 and 18 miles-per-hour. How much does a Clark c500 weigh? Approx. Shipping Weight: 12,000 Lbs. Specifications: Lift Capacity: 8,000 Lbs.