Thread: Porting/modifying W72 6x4 heads
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Old 10-25-2022, 07:08 AM
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tempest1964 tempest1964 is offline
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Jim Hand wrote an excellent book on porting those very heads. And he got excellent performance with them. Amazon (among others) sells the book. Here is a link:
https://www.amazon.com/How-Build-Per.../dp/1884089674

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