Water pump: Pontiac 69-81 V8 - 11 Bolt - Cast Impeller - NEWThis is a brand new 11 bolt water pump designed for Pontiac V8 engines from 1969 to 1981, including models such as the 301 and the 301 Turbo Trans Am. It features a durable cast impeller, ensuring reliable performance for your classic Pontiac engine. Pontiac V8 engines from 1969 to 1981 feature a "water pump plate" located behind the impeller, which directs water flow into the timing cover housings two pipes and pressurizes it into the engine block.