Lingenfelter L250070709 Lingenfelter CTS-V LSA Supercharger Pulley 2009-2012 v1.9 - Manual (Page 3)

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The Lingenfelter CTS-V Supercharger Pulley Upgrade Kit is designed to increase the speed of
the LSA Eaton TVS1900 supercharger in order to deliver increased boost and horsepower. The
Lingenfelter 2.55” LSA pulley is a roughly 18% overdrive compared to the stock 3.0” pulley, resulting
in gains of approximately 3 to 4 psi of boost on an otherwise stock vehicle.
The increased airflow and increased inlet pressure drop that results from the higher supercharger
speed can cause the factory rubber inlet duct to get sucked shut under high RPM use. For this reason
Lingenfelter Performance Engineering has designed a replacement duct as part of this pulley upgrade
package. If you are using some other aftermarket air intake kit make sure that it does not have any
areas that might suck shut under high RPM and airflow conditions.
This pulley kit is designed to work with the stock engine and premium unleaded fuel. Recalibration of
the production ECM is required when installing this pulley kit.
The production fuel injectors and production fuel pump are able to supply the correct amount of fuel
for this pulley kit so no changes to the injectors or the fuel system are needed if you are only installing
this pulley kit.
If you are using this pulley kit in combination with an overdrive damper and/or other engine
modifications you may need larger injectors and/or fuel system upgrades. Although the CTS-V uses
the same size injectors as the ZR1 Corvette (LS9 engine), the CTS-V operates at a lower system fuel
pressure so the injectors are effectively smaller in the CTS-V (LSA engine) application and therefore
cannot support as much power as in the ZR1.
The production CTS-V spark plugs are the same spark plugs used in the Z06 and ZR1 Corvettes.
In engine dynamometer, chassis dynamometer and track testing performed by LPE, we have found
these spark plugs to be well suited to stock to highly modified LSA, LS9 and LS7 engines. Unless you
are running top speed testing or endurance type road racing applications or this is a marine engine
application, LPE recommends retaining the stock LSA spark plugs at the production gap of 0.040” (1
mm). If you do find you need to go to a colder range spark plug, the production 12571165 (AC Delco
41-104) iridium spark plugs are roughly the same heat range as the Denso IT20 spark plugs and the
NGK TR7ix spark plugs. The next stage in colder plugs would be a Denso IT22 or an NGK TR8ix.
If you would prefer not to modify your production supercharger front cover, LPE can supply a
stock GM cover for you to modify or one with the parts already installed.
Read the entire instruction manual before beginning installation. Many of the stock parts will
be used in reassembly.
When referencing the side of the vehicle, the driver side of the vehicle is considered the left
side and the passenger side of the vehicle is considered the right side of the vehicle.
Torque value warning - the torque values for the fasteners are provided in metric (Nm) and
then imperial units. For the imperial units some are referenced in lb-ft and others in lb-in. Make
sure you notice the difference and set your torque wrench correctly.
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