© 2001 Edelbrock Corporation
Brochure No. 63-0048
Page 6 of 8
Rev 1/02
6. Disregard previous mark placed on distributor.
7. Install distributor so that rotor lines up with new mark and points
are just open or magnetic trigger wheel aligns with sensor.
8. Final setting to factory specifications is made with a timing light.
NOTE
: Rotate distributor opposite direction of rotor rotation to
advance timing. Rotate with rotor rotation to retard timing. If
these instructions are followed carefully, the engine should start
and not backfire after the manifold installation.
AUTOMATIC CHOKE:
CAUTION:
Improper or careless setting of the automatic choke will
cause poor mileage and poor performance. Follow detailed
instructions carefully.
STOCK ELECTRIC CHOKE:
1. When installing your OEM electric choke carburetor, re-connect
choke wire as removed. DO NOT USE COIL WIRE
2. When replacing OEM electric choke carburetor with an Edelbrock
electric choke carburetor, connect the choke wire to the choke cap
terminal marked “+”. In some cases the wiper or heater motor .
NOTE:
Be sure the other connector is connected to a good
ground. See Figure 11.
CONVERTING TO ELECTRIC CHOKE:
CAUTION:
Electric chokes will not function properly on less
than 12 volts.
1. Turn the ignition key on the running position. Use a volt meter and
locate a +12 Volt source. ( Not the coil) For example, the input side
of the resistor, a fuse panel terminal or any 12 Volt
terminal that has power only when the ignition switch is “on”.
NOTE
: Be sure your source is +12 Volts, and only when the
ignition switch is in the “Run” position.
2. Do not use the plus side of the coil. This terminal is only 8 or 9
volts and will not operate the choke.
3. Follow carburetor manufacturer’s instructions.
SETTING THE ELECTRIC CHOKE:
1. There will be an index mark on the choke cap and there will be
adjustment notches on the choke cap housing. For initial setting
make sure index mark is in the center of the adjustment notches.
See Figure 11.
2. Final setting will depend on climate conditions for your area. Cap
indicates directions for richer or leaner choke setting.
DIVORCED CHOKES:
NOTE:
Where design permits, Edelbrock duplicates the stock
manifold choke mounting configuration. For applications where
this is not possible, due to carburetor selection or manifold design,
Edelbrock has incorporated on the manifold a special heat pad,
which will allow the automatic choke function to be retained under
the following situations.
1. Carburetor choke linkage determines choke blade opening by
pushing up or pulling down.
2. Chevrolets may use the stock assembly unless carburetor
selection requires a different choke opening direction.
3. Thermostat assembly (GM part no. 3973497 for chokes which
open with an upward motion, or GM part no. 3989058 for chokes
which open with a downward motion) and dust cover (GM part no.
14006795 for both applications) may be purchased from your
Chevrolet dealer. NAPA #2-313 or equivalent may also be used in
place of GM #3973497.
4. These same assemblies may be used on most Edelbrock manifolds
for GM engines, although the choke rod must be fabricated for
non-Chevrolet applications.
5. Check Edelbrock choke rod numbers below. These are available
from Edelbrock dealers or from Edelbrock directly, if unavailable
locally.
CHOKE RODS:
9171 - 4-V Rochester divorced choke rod for small-block
Chevrolets (Performer 2101, 3701).
9179 - 4-V Rochester divorced choke rod for big-block Chevrolets
(Performer 2161, 3761).
SETTING DIVORCED CHOKE:
1. Install correct thermostat on manifold.
2. Refer to individual manifold instruction sheet for Edelbrock choke
rod part number and choke.
3. Choke must be set with engine cold.
4. Be sure carburetor and thermostat are securely bolted in place.
5. Insert plain end of Edelbrock choke rod in rolled eye of spring and
clip end in carburetor linkage. See Figure 12.
6. Open throttle by hand and push on choke blade. By bending link,
adjust to the same pre-load condition that you felt with the stock
manifold. See Figure 12.
7. When pre-load is set, remove link from carburetor end. Slide cover
over link to base. Push down on cover until it snaps in place. See
Figure 12.
8. Replace clip end carburetor linkage and install clip furnished. See
Figure 12.
9. Open throttle by hand and work choke linkage by hand. Choke
should work freely from closed to open position. If there is any
bind, check cover for rod clearance and re-shape rod to clear.
Figure 11
