S&S Cycle Cams for Panhead, Shovelhead, & Harley-Davidson Evolution Engines User Manual
Page 3
2
3
CAMS for 1984-1999 BIG TWINS
VALVE TIMING †
VALVE DURATION
LIFT @ TDC ‡
REQUIREMENTS
Part
#
Cam
Name
Recommended
Application
Intake
Open/Close
Exhaust
Open/Close
Intake
Exhaust
Intake
Exhaust
Spring
Spacing
Tappet
Type
33-5075
Bolt-In
S&S
502
Stock 80" to 89"
8.5:1 to 9.5:1
28°/40°
50°/24°
248°
254°
.225"
.221"
No
Hydraulic
33-5073
S&S
520
Engines to 96"
8.5:1 to 10:1
0°/40°
50°/2°
220°
232°
.086"
.094"
Yes
Hydraulic
33-5072
S&S
546
4" Bore Engines
9:1 to 10:1
5°/55°
52°/5°
240°
237°
.126"
.106"
Yes
Hydraulic
33-5076
S&S
561
80" to 100"
9:1 to 10:1
32°/40°
50°/26°
252°
256°
.252"
.210"
Yes
Hydraulic
33-5079
S&S
562
98" to 113"
10:1 to 10.5:1
34°/55°
60°/29°
269°
269°
.260"
.220"
Yes
Hydraulic
33-5057
S&S
563
1984-Present
10.5:1 or Higher
32°/64°
64°/32°
276°
276°
.250"
.220"
Yes
Solid or
Hydraulic
33-5109
S&S
585V
1984-Present
9.5:1 to 10.5:1
20°/45°
60°/20°
245°
260°
.186"
.180"
Yes
Hydraulic
33-5058
S&S
600
4" Bore Engines
9.5:1 to 10.5:1
20°/55°
60°/20°
255°
260°
.218"
.198"
Yes
Hydraulic
33-5080
S&S
631
1984-Present
10.5:1 or Higher
34°/61°
66°/29°
275°
276°
.281"
.221"
Yes
Solid or
Hydraulic
33-5108
S&S
640
1984-Present
10.5:1 to 11.5:1
25°/60°
65°/20°
265°
265°
.222"
.192"
Yes
Hydraulic
33-5133
S&S
675*
1984-Present
10.5:1 to 11.5:1
25°/64°
70°/25°
269°
275°
.235"
.209"
Yes
Hydraulic
* Race application, verify all clearances.
† Timing designation is function of zero lash @ .053" off base circle.
‡ TDC Lifts are measured at the valve and are for reference only. Overlap valve lifts must be checked on assembled motor. Minimum valve to
valve clearance is .040".