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Can 317 heads work with a 346 block?

This is a discussion on Can 317 heads work with a 346 block? within the Internal Engine forums, part of the LSx Technical Help Section category; can they?...

  1. #1
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    Can 317 heads work with a 346 block?

    can they?

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    Sure, but stock 317 heads have a 72 cc combustion chamber. Great for FI, not so great for NA.

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    thank you, and yep, Procharger is my end goal. The heads could use a machining because they are filthy, they came off a caddy engine, with only 10k miles. what will happen if I bolt these heads on with a cam, and no blower?

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