General Motors Allison 250-C20,C20B,C20F 1980 Parts Catalog (PUB.#10W4) by General Motors Engines Sale $81.00 | / SKU 6941:R Printed Manual - $81.00 Download - $81.00 Printed Manual Download Size 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart This item is a recurring or deferred purchase. By continuing, I agree to the cancellation policy and authorize you to charge my payment method at the prices, frequency and dates listed on this page until my order is fulfilled or I cancel, if permitted. Turboshaft Gas Turbines