497
CLASSIC
S&S Cam
For 1948-84 Big Twins
VT No.
Year
Cam
Degrees
At .053
Lift
TDC
Travel to
Free
Side Kick Cam is similar to 102 but with more top end power. Requires no head work to install. Do not use with hydraulic tappets.
—
Late 1948-69
103
Opens
Closes
Total
TDC
Coil Bind
Travel
10-0610
Late 1970-77
Inlet
28°
57°
.390
.174
.420
.470
10-0611
Late 1978-84
Exhaust
53°
27°
.390
.174
.420
.470
Aristocrat Cam shows significant gain over stock, requires no head work to install. Fits 1948-up. Do not use with hydraulic tappets.
—
1948-69
102
Opens
Closes
Total
TDC
Coil Bind
Travel
10-0601
Late 1970-77
Inlet
32°
56°
.412
.200
.440
.490
10-0602
1978-84
Exhaust
53
28
.412
.185
.440
.490
Avenger Cam performs best in 86” and 93”cubic inch engines with 4-Speed works well with hydraulic, perform best with solid lifters.
10-0603
1948-69
109
Opens
Closes
Total
TDC
Coil Bind
Travel
Inlet
32.5°
50°
.440
.211
.470
.520
Exhaust
58.5°
30°
.440
.200
.470
.520
Crusader Cam is a good cam for low end and mid range and is designed to be used with hydraulic lifters.
—
1948-69
107
Opens
Closes
Total
TDC
Coil Bind
Travel
10-0668
Late 1970-77
Inlet
29°
54°
.440
.193
.470
.520
Sifton Cam
For Identification check these applications:
1978-86
New Shovelhead and 1977 Low Rider
1970-77
Alternator Shovelhead
10-0610
Sifton Patches.
VT No. Style
48-1327 Logo
48-0368 Handshake
48-1208 Cam
48-0368
48-1327
48-1208
CUBIC INCH CHART
Stock
Stroke
74"
80"
STROKE
3¹⁄₂” 3.968” 4¹⁄₄”
4¹⁄₂”
4⁵⁄₈”
4³⁄₄”
5.00”
3
5
/
16
”
61”
3
7
/
16
”
64.8” 73.7”
78.7”
83.4”
85.7”
88.0”
92.8”
3
1
/
2
”
67.2” 76.3”
81.6”
86.6”
89.0”
91.4”
96.1”
3
5
/
8
”
72.1” 81.7”
87.4”
92.9”
95.5”
99.0”
103.2”
3
11
/
16
”
74.6” 84.7”
90.7”
96.1”
98.8”
101.5”
106.8”
3
13
/
16
”
79.9” 90.6”
97.0”
102.8” 103.7” 108.9”
114.2”
3
7
/
8
”
82.3” 93.4”
100.1” 100”
108.9” 111.9”
117.8”
4.00”
87.9” 99.7”
106.8” 113.0” 116.1” 119.3”
125.6”
4
1
/
8
”
93.4
” 106.0” 113.5” 120.2” 123.5” 126.9”
133.6”
4
1
/
4
”
99.2
” 112.6” 120.5” 127.6” 131.1” 134.7”
141.8”
Cubic Inch =
πr2 x Stroke
r = 1/2 of Bore
B
O
R
E
1 cubic inch = 16.38 cc
1 cubic inch = .0163871 liter
VT No.
Year
S&S# Application
Valve
Timing *
Intake
Open/
Close
Valve
Timing *
Exhaust
Open/
Close
Valve
Duration
Intake
Valve
Duration
Exhaust
Valve Lift
Shovel/Pan
Lift @
TDC +
Intake
Lift @
TDC +
Exhaust
Requirements
Spring Spacing
Lifter Type
10-5045 1978-84 S&S
Engines up to 88” with up +8.5:1.
Good low and mid range torque.
18°/38°
40°/18°
236°
238°
.475”/.453” .158”
.152”
No Bolt In
Hydraulic
10-5050 1948-69 S&S
514
80”/84” to 96” engines with 8.5:1
or less CR. Good mid range.
23°/43°
43°/23°
246°
246°
.514”/.540” .169”
.169”
Yes
Solid
10-5047 1970-77 S&S
560S
88” to 103” engines with 9:1 to
10:1 CR. Strong power through-
out RPM range.
20°/55°
60°/20°
255°
260°
.587”/.560” .168”
.164”
Yes
Solid
*Note: Timing designation is function of zero lash @ .053” off base circle.
+Lifts at TDC are measured at the valve and are for reference only. Overlap valve lifts must be checked on assembled motor. Minimum valve to valve clearance of
.040” is recommended.