Lingenfelter L650140709 Lingenfelter Cadillac CTS-V Air Intake Duct v1.3 - Manual (Page 11)

Page 10.
Table 1 - Belt and pulleys for different supercharger pulley and damper fitments
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” (1
1%)
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
.