Quote:
Originally Posted by mike16
valve train was never very durable at sustained highway speeds. there were new fix it solutions to the valve train every six months for almost the entire life of the engines. The did al right as water well pump motors.
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Best way to ruin a large V6 or a large diesel is run it at high rpms. These engines were designed to put out maximum torque at low rpms, unlike most V8's that are designed to put out maximum horsepower at high rpms. High rpms are great for a race car, but lousy for a working truck. V6 valves were mechanical that required periodic adjustment during scheduled maintenance. Why v6's weren't designed with hydraulic valves ( which Chevy v8's had during this period) continues to be a mystery to me.