S&S Cycle Standard and Easy Start Chain Drive Camshafts for 2006 Harley-Davidson Dyna models and all 2007-up Big Twins User Manual
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Introduction and Specifications
The S&S® chain drive cams outlined in this instruction sheet are intended for 2007-up big twin and 2006-up Harley-Davidson® Dyna® models.
NOTES:
• 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.
• A cam with over 0.585” of lift will cause interference between the valve spring top collar and the valve seal with stock valve springs.
• 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 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.
• All reference to Harley-Davidson part numbers is for identification purposes only. We in no way are implying that any of S&S Cycle’s products are
original equipment parts or that they are equivalent to the corresponding Harley-Davidson part numbers.
Contents Of Chain Drive Camshaft Kit 106-5929:
• Chain drive cams front and rear
• Inner cam bearings
• Retaining ring
• Cam cover gasket
• Oil pump scavenge o-ring
• 5ml tube of Loctite® 262
• 5ml tube of Loctite 243
Instruction Contents:
Introduction and Specifications
Securing Motorcycle
Disassembly
Reassembly
• Crankcase Preparation
• Cam Installation
• Rear Cam Endplay Adjustment
• Final Assembly
• Pushrod Installation & Adjustment
Cam Name
Lobe
Timing
Duration
Lift
Centerline
TDC
Valve Lift
05-UP Models Works
with stock valve springs
Works with
stock pushrods
Open
Close
510C
Int
20°
38°
238°
0.510"
99°
0.187"
X
X
Exh
52°
20°
252°
106°
0.179"
551C (E)
Int
17°
19°
216°
0.550"
91°
0.178"
X
X
Exh
41°
17°
238°
102°
0.170"
557
Int
6°
27°
212°
0.557"
100°
0.113"
X
X
Exh
39°
12°
231°
103°
0.146"
570C (E)
Int
20°
40°
240°
0.570"
100°
0.187"
X
X
Exh
55°
20°
255°
107.5°
0.179"
583C (E)
Int
5°
18°
203°
0.583"
96.5°
0.113"
X
X
Exh
58°
24°
262°
107°
0.206"
585C (E)
Int
20°
45°
245°
0.585"
102.5°
0.186"
X
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"
635
Int
19.5°
43.5°
243°
0.635"
102°
0.186"
Exh
58.5°
37.5°
276°
100.5°
0.284"
640C (E)
Int
25°
60°
265°
0.640"
107.5°
0.228"
Exh
65°
25°
270°
110°
0.214"
HP103
Int
20°
49°
249°
0.575"
102.7°
0.199"
X
X
Exh
45°
26°
251°
101.5°
0.206"
MR103
Int
13°
33°
226°
0.585"
100°
0.097"
X
X
Exh
50°
22°
252°
104°
0.191"
Complete Chain Drive Camshaft Kit