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Old 06-25-2008, 10:47 AM
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ekrupa2 ekrupa2 is offline
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Join Date: Jul 2007
Location: Detroit Burbs, MI
Cobra Make, Engine: Former owner of SPF#2632
Posts: 257
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Sean - from what I have been told and observed:

SR series - milder cam..."S treetable"
R Series - radical cam ..."R acing"
SR TW series (Twisted Wedge cam) - inbetween SR and R (flat torque curve)

You can order any series with the Polished Component Package. I chose not too.
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