Vortech Universal Big Block Carbureted System - Manual (Page 10)

P/N: 4GA020-030
©2008 Vortech Engineering, LLC
All Rights Reserved, Intl. Copr. Secured
08DEC08 V3.0(BBC LowMount(4GA..030 V3.0))
2
A. Put the supplied crank pulley, spacer and
V-groove pulley together while lining up the
three mounting holes.
B. Using the 3/8-16 x 4.75" hex head bolts and
3/8" washers, mount the crank pulley assem-
bly to the harmonic balancer. Torque bolts to
35 ft./lbs. (See Fig. 2-a.)
2. CRANK PUllEY
CAUTION: Before installing the crank pulley,
make sure the balancer surface is
flat without burrs or other imperfec-
tions that would cause the pulley to
run untrue.
1
2 3
5
4
NOTE: If the pulley
configuration on
your engine
requires a spe-
cial crank and
pulley (short
water pump,
etc.) use Fig.
2-b as a quide-
line for proper
pulley spacing.
Fig.2-a
4.894
4.094
BALANCER FACE
SUPERCHARGER
BELT CENTERLINE
Fig.2-b
NO. PART DESCRIPTION QTY.
1 4MA018-051 Crank Pulley 1
2 7A375-475 3/8-16 x 4.75" HH Bolts 3
3 7J375-044 3/8" Washers 3
4 4GA018-011 V-Groove Pulley 1
5 4MA017-061 Spacer 1