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pwr 426 420 stroker

  1. Parts Buy/Sell Forum
    Freshly built 6.1 based 420 cubic inches for a forced induction application with 8.5:1 compression ratio consisting of Manley internals, ARP mains, & Clevite bearings. Andy @ PWR can change the compression (pistons swapped) for ~$500 if you need just a naturally aspirated motor or built for...