CAM AND GEARS
Match the Performer-Plus cam with our Performer heads for power in 80-inch bikes. Our Performer RPM cam matches with our Performer RPM heads
for power in high-performance 80-inch and larger Big Twins and high-performance Sportsters. Cam #1742 fits 1986-90 Sportster 4-speeds and
#1743 fits 1991 and later 5-speeds. Cam #1741 is the most versatile cam for 80- to 96-inch Evos.
Performer-Plus cam and gear for Big Twins
#1740
Performer RPM cam and gear for Big Twins
#1741
Performer RPM cam & gear set for 1986-90 Sportsters (4-speed)
#1742
Performer RPM cam & gear set for 1991 & later Sportsters (5-speed)
#1743
Performer RPM cam & gear set for Twin Cam
#1748
Performer RPM gear drive cam & gear set for Twin Cam
#1735***
Performer RPM cam & gear set for Big Bore (recommended for 100–121-inch engines)
#1749
CAMSHAFT SPECS
Duration @ .053"
Open/Close*
Valve Lift**
TDC Lift
Int.
Exh.
Int.
Exh.
Int.
Exh.
Int.
Exh.
#1740
242º
252º
19º/43º
48º/24º
.490"
.490"
.176"
.203"
#1741
246º
254º
20º/46º
52º/22º
.600"
.600"
.183"
.187"
#1742
240º
248º
18º/42º
46º/22º
.590"
.590"
.166"
.192"
#1743
240º
248º
18º/42º
46º/22º
.590"
.590"
.166"
.192"
#1748
246º
254º
20º/46º
52º/22º
.619"
.619"
.188"
.193"
#1735***
246º
254º
20º/46º
52º/22º
.619"
.619"
.188"
.193"
#1749
265º
265º
27º/58º
58º/27º
.650"
.650"
.210"
.210"
*
Measured at "0" keyway position (Big Twins only).
**
1.6 rocker arm ratio.
***
Installation requires the purchase of Harley Davidson P/N 8983 cam bearing update kit. Gear sets sold separately.
