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1.7 rocker arms

793 Views 1 Reply 2 Participants Last post by  tom.moss1949
I have been looking at the various rocker arm ads and notice that some say 1.7,1.72, or 1.73 ratio. Is there really any difference in these parts, or are some just more specific on their rates than others?
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the difference is negligable - especially if you measure the actual ratio - those are a manufacturing spec and those have tolerances.
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