Techtonics Hydraulic 16V 268/276 cam set. Fair low end power, fair mid-range and great top end power. Works fair with Fuel Injection. Chilled hardened billets with timing gears installed. #109.083 HD Valve Springs Recommended. (227 /233 duration @.050", .440"/.441" lift) Below 6,500 rpm the 109 076 254 degree cam set are better. These are not good street cams. 109569