SLAYER PRO 4X4 • 37
Constant
Rate Travel
Wheel Travel
Wheel Force
0
2
4
6
8
10
12
14
16
18
20
10
20
30
40
50
60
70
80
90
Progressive
Rate Travel
#5359 Progressive 3 Rocker Arm Set
#5133 Pushrod Spacers (these are required to lengthen the pushrods to
maintain proper suspension travel.)
The chart below demonstrate the effect of the various rocker arms
on wheel force as
the suspension is
compressed. On the
progressive rate,
wheel force is light
at first and increases
as the suspension is
compressed.
Bump Steer Elimination Chart
The illustrations and the following table detail the position of the outer
toe link end for various caster and roll center settings to eliminate
bump steer. The shims and the hollow balls used to adjust bump steer
are provided with your vehicle.
REAR
The illustrations and the following table detail the position of the outer
toe link end for the rear suspension. Depending on the upper control
arm mounting hole in the bulkhead (roll center) and desired toe-in
effects, the following settings should be used.
Roll Center
There are two holes on the
bulkheads to mount each upper
suspension arm. The roll center
of the vehicle can be raised by
mounting the upper control arm in
the lower of the two holes. This will
effectively increase the roll stiffness
of the vehicle (similar to installing swaybars). Adding roll resistance to
one end of the vehicle will tend to add traction to the opposite end. For
example, increasing roll resistance in the rear by installing the upper
arms in the lower holes will provide more traction for the front wheels
and potentially more steering.
From the factory, the front arms are installed in the upper position
and the rear arms are installed in the lower position. This makes the
truck easier and more forgiving to drive. The other holes should be
reserved for track tuning.
Note
: When the front upper suspension
arms are moved to a different hole, the outer toe link ends should
be repositioned to eliminate bump steer. Refer to the Bump Steer
Elimination chart (left) and look up your suspension combination
(caster angle and roll center position) to find the correct position for
the front outer toe links. The same is required for the rear control links.
Adjustment is achieved using the shims and hollow balls provided with
the vehicle.
Outer Toe Link End Setup
Caster
5° 7.5° 10° 12.5°
15°
Control Arm
Mounting Hole on
Front Bulkhead
Upper
Lower
Upper
Lower
Upper
Lower
Upper
Lower
Upper
Standard
Hollow Ball
Thin Shim
Thick Shim
Thin Shim
Standard
Hollow Ball
Thick Shim
Tall Center
Hollow
Ball
Thick Shim
Standard
Hollow Ball
Thin Shim
Thick Shim
Thin Shim
Standard
Hollow Ball
FRONT
Upper Control Arm
Upper Mounting Holes
Upper Control Arm
Lower Mounting Holes
ADVANCED TUNING ADJUSTMENTS
*stock configuration out of the box
With 14T Clutch Bell
# of Spur Gear Teeth
2nd gear sets
Gear
36
38
40
17T/37T
1st
16.87
17.81
18.75
(Standard)
2nd
11.70
12.35
13.00
16T/40T
1st
16.87
17.81
18.75
(Close)
2nd
12.75
13.46
14.17
18T/38T
1st
16.87
17.81
18.75
(Wide)
2nd
10.77
11.37
11.97
With 15T Clutch Bell
(standard)
# of Spur Gear Teeth
2nd gear sets
Gear
36
38
40
17T/37T
1st
15.75
16.62
17.50
(Standard)
2nd
10.92
11.53
12.14
16T/40T
1st
15.75
16.62
17.50
(Close)
2nd
11.90
12.56
13.22
18T/38T
1st
15.75
*
16.62
17.50
(Wide)
2nd
10.05
*
10.61
11.17
With 16T Clutch Bell
# of Spur Gear Teeth
2nd gear sets
Gear
36
38
40
17T/37T
1st
14.76
15.58
16.40
(Standard)
2nd
10.24
10.81
11.38
16T/40T
1st
14.76
15.58
16.40
(Close)
2nd
11.16
11.78
12.40
18T/38T
1st
14.76
15.58
16.40
(Wide)
2nd
9.42
9.95
10.47
With 17T Clutch Bell
# of Spur Gear Teeth
2nd gear sets
Gear
36
38
40
17T/37T
1st
13.89
14.67
15.44
(Standard)
2nd
9.64
10.17
10.71
16T/40T
1st
13.89
14.67
15.44
(Close)
2nd
10.50
11.09
11.67
18T/38T
1st
13.89
14.67
15.44
(Wide)
2nd
8.87
9.36
9.85
Gear Ratio Chart
The following gear ratio chart shows the
available combinations with optional
spur gears, clutch bells, and two-speed
gear sets.
Outer Toe Link
End Setup
Control Arm
Mounting Hole on
Rear Bulkhead
Upper Hole
Lower Hole
Outer Toe Link
End Setup
Control Arm
Mounting Hole on
Rear Bulkhead
Upper Hole
Lower Hole
Tall Center
Hollow Ball
Tall Lower
Hollow Ball
Tall Upper
Hollow Ball
Tall Center
Hollow Ball
To Eliminate Bump Steer:
For Added Toe-In During Acceleration:
