TwinTurbo.NET: Nissan 300ZX forum - Re: Ported 40P vs stock 48P heads.
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Subject Re: Ported 40P vs stock 48P heads.
     
Posted by Bigmatthew86 on December 25, 2017 at 7:40 AM
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In Reply To Ported 40P vs stock 48P heads. posted by Pearl_TTZ on December 25, 2017 at 03:25 AM
     
Message My limited knowledge on the subjects says no. From what I have read 48p heads really don't flow any better than 40p. So if your 40p are ported if you don't port the 48p your actually going backwards.

     
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