Vortech Engineering Brand's Products

P/N: 4GC020-010

15SEP01 V1.1

(88-95 GM Lt Trk(4GC))

A. Install the connector bracket to the front of the

stock bracket at the power steering pump with

the two longer metric fasteners provided. Some

vehicles use metric and others use standard

SAE threads. Check the threads on the fasten-

ers you have just removed against the ones

supplied prior to installation. Both metric and

standard fasteners have been provided for your

convenience. Leave the fasteners slightly loose

until all fasteners are started.

B. Position the main supercharger mounting plate

and install the fasteners as shown in the graphic.

Make sure not to forget the 1/8" long tube spacer

behind the plate on the inward bolt.

C. Remove the fastener securing the stock bracket

to the cylinder head on the outward side. Install

the cast aluminum mounting bracket behind the

new mounting plate and on top of the tab on the

stock bracket (where you just removed the

fastener). Place the 3/8-16 x 5-1/2" bolt through

the plate and into the head, passing through the

tab on the stock bracket.

D. Remove the smaller alternator fastener and

install the upper stiffener plate as shown. Do not

secure the stiffener until the supercharger is

installed.

E. Attach the stiffener rod between the cylinder

head and mounting plate. A one inch spacer is

used at the cylinder head as shown in Fig. 6A-a.

F. Secure all other bracket fasteners at this time.

FOR 1988-1993 MODELS

STIFFENER PLATE

ATTACHMENT PLATE

3/8-16 x 2"

3/8-16 x 2-3/4"

1" SPACER

.125 SPACER

ALTERNATOR

STOCK BOLT

3/8-16 x 5-1/2"

3/8-16 x 1"

SUPPORT

MOUNTING BRACKET

POWER STEERING PULLEY

5/16-18 x 1"

3/8-16 x 1" OR

M10-1" x 25

3/8-16 x 1"

5/16-18 x 1"

MOUNTING PLATE

6A. MAIN BRACKET AND POWER STEERING PUMP - 1988-1993 MODELS

Fig. 6A-a