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-   -   .470 lift w/ 416s (https://www.thirdgen.org/forums/tech-general-engine/670597-470-lift-w-416s.html)

bulldogSS 01-12-2013 08:52 PM
.470 lift w/ 416s
 
wondering what it takes to get a 416 casting head to safely handle .470 lift. i know i need new springs but am unsure about what else. should i use a different type of valve seal? different retainers on the exhaust? +50 locks? any help would be awsome. thanks Mark


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