User Manual

Page
10.
Table 1 - Belt and pulleys for different supercharger pulley and damper tments
Crank
Pulley
(OD%)
Supercharger
Pulley
Belt Belt PN Upper Idler Lower Idler Bracket
Pulley
Ratio
OD%
SC Speed
@ 6500
RPM
stock 7.8”
(0%)
stock 3.0” stock 1680mm 12628026
stock 90 mm stock 70 mm stock
2.6 N/A 16,900
2.55” 1655mm/65.2” 8PK1655 3.1 18% 19,900 2.38” 1643mm/64.5” K080645 3.3 26% 21,300
8.25”
(6%)
stock 3.0” stock 1680mm 12628026 stock 90 mm
stock 70 mm stock
2.8 6% 17,900
2.55” 66.0” K080660 stock 90 mm 3.2 25% 21,000 2.38” stock 1680mm 12628026 100 mm 3.5 34% 22,500
8.66”
(11%)
stock 3.0” 67.5” K080675
stock 90 mm stock 70 mm stock
2.9 11% 18,800
2.55” 67.0” 080670 3.4 31% 22,100
2.38” TBD TBD 3.6 40% 23,700
9.17”
(18%)
stock 3.0” 68.5” K080685
stock 90 mm stock 70 mm stock
3.1 18% 19,900
2.55” 68.0” K080680 3.6 38% 23,400 2.38” TBD TBD 3.9 48% 25,000
9.17”
(18%)
stock 3.0” 68.0” K080680
stock 90 mm stock 70 mm LPE
3.1 18% 19,900
2.55” 68.5” K080685 3.6 38% 23,400 2.38” TBD TBD 3.9 48% 25,000
9.55”
(23%)
stock 3.0” 69.0” K080690
stock 90 mm stock 70 mm LPE
3.2 23% 20,700
2.55” 68.5” K080685 3.8 44% 24,300 2.38” 68.0” K080680 4.0 54% 26,000
9.73 10 rib
(35%)
2.77” 10 rib 69.5” K100695
90 mm,
0.350 spacer,
M10x1.5x60mm
cap head screw
76 mm,
0.200 spacer,
M10x1.5x60mm
cap head screw
LPE 3.5 35% 22,800
10.0”
(28%)
stock 3.0” 70.0” K080700
stock 90 mm stock 70 mm LPE
3.3 28% 21,700
2.55” 69.5” K080695 3.9 51% 25,500 2.38” 69.0” K080690 4.2 62% 27,300
Supercharger speeds above 23,000 RPM are not recommended Pulley ratios above 35% should only be used in applications with proportionally lower maximum engine speeds (below 6500 RPM). For applications where the crank pulley diameter is greater than 9.17”, the LPE bracket is required in order to provide enough clearence between the crank pulley and the lower idler pulley.