Vortech 1993-1997 5.7L LT1 F-Body - Manual (Page 28)

P/N: 4GH020-010
©2003 Vortech Engineering, LLC
All Rights Reserved, Intl. Copr. Secured
05NOV01 v1.2
(4GH V1.2)
16
13. COIL RELOCATION AND IGNITION BOX MOUNTING cont'd.
14. IGNITION/BOOST CONTROL OPERATION
A. The Ignition/Boost Control unit is designed
to retard ignition in relation to boost.
B. The unit is adjustable from 0
°
of ignition
retard to 4
°
of ignition retard for each pound
of boost, up to a maximum of 20
°
.
C. Using the 1
°
per pound position as a starting
point, adjust the ignition retard knob until just
beyond the point of detonation. Use third
gear for testing in a safe area or road. Adjust
the retard according to changes in altitude
and fuel quality.
1993-1995 VEHICLES ONLY: SEE
SUPPLEMENT FOR 1996-97
Caution: It is extremely important that the
boost retard never be turned to 0
°
.
It is recom-mended that in stock
street applications, the knob be at
no less than 1
°
per lb.
BLACK
TERMINAL
NO CONNECTIONS
AT GREY TERMINAL
GM ADAPTER
HARNESS
HEAVY RED
HEAVY BLACK
TO BATTERY +
TO GROUND
FACTORY GM
HARNESS
(UNPLUGGED
FROM COIL)
IGNITION COIL
WIRE TAP
RED
WHITE
BLACK
ORANGE
GREEN TACH (TAPE UP)
GREY MAGNETIC TRIGGER HARNESS (TAPE UP)
YELLOW (TAPE UP)
BLACK (GROUND) BLUE (RET
ARD INPUT)
RED
SUPPLIED MAP SENSOR
MANIFOLD
VACUUM
3 WIRE HARNESS RANE C
ELECTRONICS
HI-6TR
TIMING RETARD CONTROL
R ETARD
C RANE
cams ®
HI-6R
CAPACITIVE DISCHARGE IGNITION
WITH AUTO-SEQUENCE REV LIMITER
Figure: 13-e
Figure: 14-a
Examples of Ignition Retart vs. Boost
15
10
5
5 psi at 3
°
per lb. 7 psi at 2
°
per lb.
10 psi at
1/2
°
per lb.
MAX. RETARD
DEGREES OF RET
ARD
5 7 10
PSI BOOST
MAXIMUM
RETART=20
°