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Lingenfelter L250090309 Lingenfelter C6 ZR1 Corvette Supercharger Pulley 2009-12 v1.2 User Manual

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Read the entire instruction manual before beginning installation. Many of the stock parts will

be used in reassembly. Some steps may require two (2) people.

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.

If you do not want to modify your cover, LPE can supply a new stock LS9 front cover or one

with the parts already installed.

2.

ADDITIONAL NOTES:

The 2.6” pulley with the stock damper results in a 19% increase in supercharger speed. At 6500 RPM

engine speed this results in a roughly 18,300 RPM supercharger speed.

The 2.6” pulley when combined with our 14% overdrive damper will result in a 36% increase in

supercharger speed of 21,000 RPM at 6,500 RPM engine speed. Based on LPE testing we do not

recommend exceeding 23,000 RPM on the LS9 supercharger.

The production GM LS9 fuel injectors and production fuel pump are able to supply the correct amount

of fuel for the 2.6” pulley size so no changes to the injectors or the fuel system are needed if you are

only installing the LPE supercharger 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.

The production 2009-2010 ZR1 Corvette spark plugs are the same spark plugs used in the 2006-

2010 Z06 Corvettes and the 2009-2010 CTS-V. 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 LS9, LS7 and LSA 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

LS9 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.