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Please don't waste a stout 445-inch short-block on something like restrictive factory 390 passenger-car heads. A lightweight alternative to trying to find Cobra Jet or 427 medium-riser castings is Edelbrock's affordable aluminum Performer RPM which, out of the box, Barry considers to be superior to any of those factory heads. In layout, the Performer RPM is designed as a direct bolt-on replacement for factory heads. View Related Article
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