S&S Cycle Standard and Easy Start Chain Drive Camshafts for Harley-Davidson Twin Cam 88 Engines 1999–2006 Big Twin, except 2006 Dyna models - Manual (Page 2)

NOTES
• 1999–2004 stock springs will handle camshafts with lift up to 0.510". If a camshaft with higher lift is installed, high performance valve springs capable
of handling a greater lift must be used.
• 2005–up stock valve springs will handle camshafts with lift up to 0.585". If a camshaft with higher lift is installed, high performance valve springs
capable of handling a greater lift must be used. Cams with over 0.585" of lift will cause interference between the valve spring top collar and the valve
seal with stock cylinder heads.
• Piston to valve clearance will need to be confirmed when using a cam with over 0.585" of lift. Clearance should be at least 0.060" intake and .080"
exhaust.
• Valve to valve clearance will need to be confirmed when using a cam over 0.585" lift. Clearance should be a minimum of 0.060"
• Installation of S&S chain drive cams requires special tools. See Picture 1 on page 3 for the required tools. Attempting the cam change operation
without these tools will be difficult. Damage can result which will not be covered under warranty.
• Possible failure may result if thread locking compound is not applied to the cam drive sprocket flange bolts. Always prepare threads according to the
instructions on the container.
• S&S® chain drivecams are compatible with the stock splined chain sprocket used in 2000–up Twin Cam 88 engines, but may be used in 1999 engines if
the Harley-Davidson 2000–up splined rear cam sprocket and appropriate 2000-up sprocket spacer are used.
• Changing camshafts in the Twin Cam 88® engine requires use of hydraulic press and special tools. This installation should be undertaken only by
experienced mechanic with access to Harley-Davidson® service manual and all required tools or equivalent. Tightening fasteners to correct specifications
with accurate torque wrench is mandatory.
CONTENTS OF CHAIN DRIVE CAMSHAFT kIT
• Chain drive cams front and rear
• Inner cam bearings
• Retaining ring
• Cam cover gasket
• 5ml tube of Loctite® 262
• 5ml tube of Loctite 243 INSTRUCTION CONTENTS:
A. Introduction & Specifications
B. Securing Motorcycle
C. Disassembly
D. Installing New Cams and Reassembly
E. Pushrod Adjustment
Cam
Name
Lobe
Timing
Duration Lift Centerline TDC Lift
99-04
Models
Works with
stock valve
springs
05-UP
Models
Works with
stock valve
springs
Works
with stock
pushrods Open Close
475
Int 2° 34° 216°
0.475"
106° .060"
X X X
Exh 36° 4° 220° 106° .060"
509C
Int 18° 18° 216°
0.509"
90° .0174"
X X X
Exh 46° 11° 237° 107.5° 0.140"
510C
Int 20° 38° 238°
0.510"
99° 0.187"
X X X
Exh 52° 20° 252° 106° 0.179"
551C (E)
Int 17° 19° 216°
0.550"
91° 0.178"
X
Exh 41° 17° 238° 102° 0.170"
570C (E)
Int 20° 40° 240°
0.570"
100° 0.187"
X
Exh 55° 20° 255° 107.5° 0.179"
583C (E)
Int 5° 18° 203°
0.583"
96.5° 0.113"
X
Exh 58° 24° 262° 107° 0.206"
585C (E)
Int 20° 45° 245°
0.585"
102.5° 0.186"
X
Exh 60° 20° 260° 110° 0.179"
625C (E)
Int 20° 55° 255°
0.625"
107.5° 0.189"
Exh 60° 20° 260° 110° 0.184"
640C (E)
Int 25° 60° 265°
0.640"
107.5° 0.228"
Exh 65° 25° 270° 110° 0.214"
675C (E)
Int 25° 60° 269°
0.675"
109.5° 0.235''
Exh 74° 25° 275° 112.5° 0.205"
A. Introduction & Specifications
The S&S® chain drive cams outlined in this instruction sheet are intended for 1999-2006 Harley-Davidson® Twin Cam 88® models.