Lingenfelter L250090309 Lingenfelter C6 ZR1 Corvette Supercharger Pulley 2009-12 v1.2 - Manual (Page 26)

Page
89. Install the throttle body on the
supercharger front cover. Using a 10 mm
socket, torque the four (4) bolts to 10 Nm (89
lb-in).
90. The idler to be replaced is the factory 90
mm idler found on the driver side of the vehicle
(not the 76 mm idler found near the water pump
and tensioner).
91. Using a 15 mm socket, remove the bolt
that secures the factory 90 mm idler.
25.
92. Due to the low clearance in the front of
the engine compartment, it is recommended
to use a flex-head ratchet for this part of the
installation.