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The Lingenfelter C6 ZR1 LS9 supercharger snout or supercharger front cover provides reduced pressure drop and increased horsepower on stock and higher pulley ratio applications.

Lingenfelter offers this 10 bolt stainless steel supercharger pulley hub that will allow you to quickly switch between our 2.60 inch pulley and our 2.35 inch pulley on the car.

To install the 10 bolt hub you must remove your supercharger snout or front cover and use a pulley puller to remove the stock pulley. After removal the new 10 bolt hub can be pressed onto your stock C6 ZR1 Corvette supercharger shaft.

Installation will require the additional 2.60 inch or 2.35 inch pulley.

10 Bolt Supercharger Pulley Choices – stock balancer
2.60 inch - 19% OD - 18,300 RPM supercharger speed*
2.35 inch - 32% OD - 20,300 RPM supercharger speed*

10 Bolt Supercharger Pulley Choices – overdrive balancer
2.60 inch - 36% OD - 20,800 RPM supercharger speed*
2.35 inch - 50% OD - 23,000 RPM supercharger speed*

*Measured at 6,500 RPM engine speed / Stock supercharger speed 15,400 RPM

Supercharger Pulley	Belt Description	Part number/ belt / idler
2.60 diameter	Stock belt	100 mm idler L250130309
2.35 diameter	82.5 inch 11 rib belt	76 mm idler   L250120309

With Lingenfelter 14% Overdrive Harmonic Balancer
Supercharger Pulley	Belt Description	Part number/ belt / idler
2.60 diameter	2160 mm 11 rib belt	11PK2160 / 90 mm
2.35 diameter	Stock belt	76 mm idler   L250120309
Factory belt specs	2137 mm 11 rib belt	12627521 / 90 mm idler

Pulley diameters are measured with a 2.5 mm check ball. If measuring the pulley diameter directly with a caliper the diameters will be closer to 2.60” and 2.35”. The 2.38” pulley when combined with our 14% overdrive damper will result in a supercharger speed 23,000 RPM at 6,500 RPM engine speed. Based on LPE testing we do not recommend exceeding 23,000 RPM on the LS9 supercharger.

Modifications listed on this page will requires recalibration of the factory ECM.