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Old 03-26-2013, 08:26 PM's Avatar is online now
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Neither set flows great, just mediocre heads. The 396 heads have smaller chambers (109 cc) this would add compression, but require the large, hard to obtain "N" series plugs and won't last on modern fuel without hard seats.

Big blocks need to breath to make power.

What kind of budget ? What is it going in? Inteded use?
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