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Message: <blockquote data-quote="jsloan10" data-source="post: 961560" data-attributes="member: 560397">I read a build up in Hot rod magazine of a 4.3.They explained that the 4.3 is actually a 350 with two cylinders cut off, so the pistons and connecting rods can be swapped with high performance pistons and rods. The heads and the crank are a different story though, there is no known manufacturer of highperformance heads and cranks for a 4.3 so you're left with the other option of porting you're existing heads and getting you're crank balanced. I forget what they did for an intake manifold and cam but I know they managed to get 350 horse out of it reliably off regular gas.</blockquote>

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