S&S Cycle Cams for Panhead, Shovelhead, & Harley-Davidson Evolution Engines User Manual
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PANHEAD & SHOVELHEAD CAMS
VALVE TIMING †
VALVE
DURATION
VALVE LIFT
LIFT @ TDC ‡
REQUIREMENTS
Part
#
Cam
Name
Recommended
Application
Intake
Open/Close
Exhaust
Open/Close
Intake
Exhaust
Shovel
Pan
Intake
Exhaust
Spring
Spacing
Tappet
Type
33-5062
S&S
450S
1948-’69
Up to 8.5:1
18°/38°
40°/18°
236°
38°
.453"
.475"
.151" Shovel
.158" Pan
.145" Pan
152" Pan
No
Hydraulic
33-5063
S&S
450S
1970-’77
Up to 8.5:1
18°/38°
40°/18°
236°
238°
.453"
.475"
.151" Shovel
.158" Pan
.145" Pan
.152" Pan
No
Hydraulic
33-5064
S&S
450S
1978-’84
Up to 8.5:1
18°/38°
40°/18°
236°
238°
.453"
.475"
.151" Shovel
.158" Pan
.145" Pan
152" Pan
No
Hydraulic
33-5040
S&S
495
1948-’69
9.75 or Higher
30°/62°
62°/30°
274°
274°
.495"
.520"
.220"
.198"
Yes
Solid
33-5041
S&S
495
970-’77
9.75 or Higher
30°/62°
62°/30°
274°
274°
.495"
.220"
.198"
Yes
Solid
33-5042
S&S
495
1978-’84
9.75 or Higher
30°/62°
62°/30°
274°
274°
.495"
.220"
.198"
Yes
Solid
33-5050
S&S
514
1948-’69
8:1 to 9:1
23°/43°
43°/23°
246°
246°
.514"
.540"
.194"
.186"
Yes
Solid
33-5051
S&S
514
1970-’77
8:1 to 9:1
23°/43°
43°/23°
246°
246°
.514"
.194"
.186"
Yes
Solid
33-5052
S&S
514
1978-’84
8:1 to 9:1
23°/43°
43°/23°
246°
246°
.514"
.194"
.186"
Yes
Solid
33-5059
S&S
560S
1948-’69
9:1 to 10:1
20°/55°
60°/20°
255°
260°
.560"
.587"
.168"
164"
Yes
Solid
33-5060
S&S
560S
1970-Early ‘77
9:1 to 10:1
20°/55°
60°/20°
255°
260°
.560"
.168"
164"
Yes
Solid
33-5061
S&S
560S
1977-Early ‘84
9:1 to 10:1
20°/55°
60°/20°
255°
260°
.560"
.168"
.164"
Yes
Solid
† Timing designation is function of zero lash @ .053" off base circle.
NOTE: Cams can be used in other applications. Call S&S for information if you have any questions.
‡ 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".