This requires that an Evolution style cam must be used in these engines, or in any engine equipped with S&S Shovelhead style tappet guides. S&S complete Shovelhead engines are equipped with special tappet guides designed to use S&S Evolution style tappets. Important information on S&S Evolution Style Cams in S&S Shovelhead Style Engines Refer to the Cam Specification Chart for cam timing and lift information. 600: An exceptional cam in any large displacement engine with 9.5:1 to 10.5:1 compression. Since many S&S cams are high lift types, they are available with a cam only or in a kit with a set of the appropriate S&S high performance valve springs. After they are satisfied with the proven performance they carefully select and match various components to make the best kit combinations. S&S claims that their camshafts and other related valve train parts go through extensive dyno testing and usage on the track and street. Overall, the SE-4 cam is a safe and reliable choice. Depending on where you buy the SE-4, the price can range from 170 to 230.
The SE-11 is very similar to the SE-4, but it has a larger RPM range. Cams for Flathead, Panhead & Shovelhead If you own a lighter bike and want an original Harley-Davidson cam, then the SE-11 is a good choice for you.
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