Vortech Engineering Automobile 4GC020-010 Benutzerhandbuch

P/N: 

4GC020-010

©2001 Vortech Engineering, LLC

All Rights Reserved, Intl. Copr. Secured

15SEP01 V1.1 

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

A. The supercharger uses engine oil for lubrication

and must have an oil feed line connected to a
filtered oil access on the engine and an oil return
or drain. (See 

Fig. 4-a

.) Connection to the oil pan

must be above the oil level.

B. Disconnect the wire connector and remove the

oil pressure sending unit. The sender is found
on the left side at the front of the engine block.
Install the TEE provided in the port with the
branch pointing forward. Place the pressure
sender in front branch of the TEE, secure and
reconnect the wire. Place the flare fitting in the
remaining port and secure.

C. Connect the hose to the flare fitting and secure

with tie wraps. Take care that the feed line will
not rub on the sheet metal inner fender.

D. Temporarily cover the end of the hose and

protect it from dirt until connecting to the super-
charger.

OIL PAN

ENGINE BLOCK

A. Remove the TBI unit from the manifold. (See

Fig. 5-a

.) Remove old gaskets and clean the

gasket surfaces.

B. To prevent pressurized fuel and air leakage

around the throttle shaft, it is necessary to
normalize the pressure. To accomplish this,
modify the throttle body by drilling two small
holes from the base surface to the throttle shafts.
You may “layout” the location by following the
template on page 6 or transfer it directly from the
gasket provided. Use a small center drill to start,
then a #56 or 3/64" diameter drill bit and drill
through the base of the throttle body until the bit
firmly contacts the shafts.

C. Assemble the throttle body, the new injector

spacer block and gaskets. Place the gasket with
the small vent holes on top of the spacer. Place
the gasket without holes on the bottom. On
some models dowel pins have been provided
for alignment. Use the two special threaded
rods, nuts and one longer bolt to secure the
throttle body and the Vortech spacer to the
manifold.

WARNING: The oil system contains a small

orifice that is easily plugged. DO
NOT use any type sealant on
any feed line threads. Instead,
use clean engine oil. Disas-
semble and blow out entire line
if you have any doubts.

3

Fig. 5-a

Fig. 4-a