user manual

P/N: 4GP020-015
©2006 Vortech Engineering, LLC
All Rights Reserved, Intl. Copr. Secured
30MAY06 SmallBlockChev(4GP..015v1.1)
6
A. Locate the supercharger drive assembly
(4GP116-041). Using the 7/16-20 x 6" screw
and washer, loosely install the appropriate
spacer for your application to the front of the
factory crank pulley.
B. Rotate the previously installed spacer to align
the three mounting holes. Install the supplied
10-rib crank pulley and secure using the sup-
plied hardware. (3/8-24 x 5" for Serpentine and
3/8-24 x 4.75" for V-belt applications.) Torque
center bolt to 35 ft.lbs. and the three pulley
retainers to 25 ft.lbs.
E. Locate the manual tensioner assembly
(4GP111-041). Install the 7/16-20 screw
through the 7/16" “thick” washer, tensioner
pulley, pulley spacer and tensioner plate.
Secure using the 7/16"SAE washer (thinner
one) and Nyloc nut provided.
F. Loosely install the belt tensioner assembly
onto the supercharger using the M12 hard-
ware provided. Locate the supplied 10-Rib
supercharger drive belt and install between
the crank pulley and supercharger pulley.
Using a 1/2" ratchet, apply tension to the
supercharger drive belt and secure the three
M12 screws previously installed. (See
Fig. 5-b.)
5. CRANK PULLEY AND SUPERCHARGER DRIVE PULLEY INSTALLATION
NOTE: If the supercharger drive pulley will not
slide onto the shaft DO NOT FORCE IT.
Light heating of the supercharger drive
pulley with a propane torch will aid in
installation.
NOTE: Take care to ensure that all pulleys and
spacer are piloting correctly and seated
flat against their mounting faces.
NOTE: Two crank pulley spacers are provided in this
system. 4GP017-031 (3.695" long) is to be
used for serpentine drive systems. The
4GP017-041 (3.293" long) is to be used for
V-belt applications.
NOTE: The bearing retaining ring on the pulley
should be facing the pulley spacer to prop-
erly clear the “thick” retaining washer.
(See Fig. 6-d.)
C. Install all applicable accessory belts at this time
and tension using the appropriate belt tension-
er for your application.
D. Lightly grease the supercharger input shaft
and/or the supercharger drive pulley bore.
Install the pulley onto the supercharger input
shaft and rotate the pulley to align the keyways.
Slide the square key into the keyway. Install the
pulley retainer assembly into the input shaft
and hand tighten.