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Originally Posted by xacoupe
Most 460s were not performance motors and would not put out anything near 500hp stock.
Most of them in pollution trim would be hard puahed to knock out 200 Hp but with moutains of torque.
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The 429 Thunderjets were rated at around 360HP and in reality put out about 325HP. The 460's of the same era (1968-1970) were about the same.
HP dropped off slowly after that due to emmissions reasons, but not suddenly down to the 200HP number that you mention. The reason for the 200+/- Hp rating was only because in 1972, the HP rating system
was changed from SAE HP to NET HP rating system, that's all. My low compression, regular gas 1974 460 still smoked the tires in stock trim.
Also, yes, rub a little bit on the factory iron and they will really wake up dramatically, a la Jeckyl & Hyde. 450-500HP is a walk in the park for a 460, and 600HP with the factory iron passenger car heads is not uncommon these days.
Paul
