CAMS FOR TWIN CAM (Ȧ*ȡ1ȝ 657TC Popular big lift cam. Designed for powerful torque applications; has produced over 120 rear wheel horsepower in a 107" engine with mild compression, mufflers and pump gas. Everything you expect from Red Shift: great performance with excellent valve train dynamics. 723296 Fits 1999 thru 2006 Twin Cam with Silent Chain cam drive (except 2006 Dyna) 723295 Fits 1999 thru 2006 Twin Cam with S&S Gear Drive (except 2006 Dyna) 723297 Fits 2006 Dyna and all 2007-2017 Twin Cam with roller chain cam drive 723298 Fits 2006 Dyna and all 2007-2017 Twin Cam with S&S Gear Drive 647TC This cam was designed for true performance enthusiasts who require a wide, usable power curve and strong top end charge, with excellent valve control. Recommended engine size 116" and up and 10.0-10.5: 1 compression. For additional power add 1.75 rockers and more compression. 723292 Fits 1999 thru 2006 Twin Cam with Silent Chain cam drive (except 2006 Dyna) 723291 Fits 1999 thru 2006 Twin Cam with S&S Gear Drive (except 2006 Dyna) 723293 Fits 2006 Dyna and all 2007-2017 Twin Cam with roller chain cam drive 723294 Fits 2006 Dyna and all 2007-2017 Twin Cam with S&S Gear Drive Early 721941 721948 721950 Late 750872 750871 750873 Outer Cam drive gears Cam gear drive kit (includes pinion gear, front and rear inner cam gears and outer cam gear) Cam installation support kit Oversized & Undersized Gears Due to machining variations in the stock cam plate, oversized or undersized gears may be needed to achieve correct gear lash Rear inner cam gears Early Late - 750973 Undersized Pinion gears 1999-2006 Touring, 1999-2005 Dyna, 2000-2017 Softailup 750976 Undersized 750977 Oversized Replacement parts Early Late 760553 - Outer cam gear key THUNDERMAX CAM SPECIFICATIONS Cam Name 557 575 577 627 647 657 Valve Timing Open/Close Intake 20°/42° 25°/41° 49°/17° 28°/52° 26°/58° 27°/45° Exhaust 44°/18° 49°/17° 49°/23° 58°/27° 58°/26° 52°/27° Valve Duration Intake 242° 246° 252° 260° 264° 252° Exhaust 242° 246° 252° 265° 264° 259° Valve Lift Intake .557" .575" .577" .625" .647" .657" Exhaust .557" .575" .577" .600" .647" .650" Lift@TDC Intake .180" .200" .214" .241" .211" .227" Exhaust .164" .157" .194" .204" .211" .214" www.zodiac.nl 07-067
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