630-Horsepower Pontiac 409ci by Semco Performance at the Amsoil Engine Masters Challenge 2014

Learn more about this engine at http://blogs.hotrod.com/409ci-pontiac-from-semco-racing-at-the-amsoil-engine-masters-challenge-2014-145331.html

This is an Engine Masters entry from Semco Performance. It’s a Pontiac 409 topped with ported Kauffman heads, and it made 637 horsepower and 538 lb-ft of torque during the dyno competition at the 2014 Amsoil Engine Masters Challenge presented by HOT ROD. Engine Masters is an annual shootout of engine builders in competition for huge cash prizes. For 2014, the Challenge is for two-valve V8s above 400ci, running on 101-octane fuel, and making optimal power from 3,000-6,500 rpm.

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