Vortech 1964-1967 Pontiac GTO Carbureted - Manual (Page 18)

10
9. CARBURETOR ENCLOSURE INSTALLATION
A. Remove the carburetor from the intake
manifold and thoroughly clean the intake
manifold carburetor flange. Remove all
throttle linkage brackets from the intake
manifold.
B. Replace the carburetor studs in the intake
manifold with those supplied and install a
carburetor gasket.
C. Install the supplied 1/4npt x 3/8” 90º barb
fitting into the rear of the carburetor
enclosure and orient so that it will point
towards the driver side.
D. Install the lower part of the carburetor
enclosure over the studs until it sits flat on
the intake manifold. (An extra carburetor
base gasket is included that may be
stacked between the enclosure and the
intake if there is a minor clearance problem
or used with a spacer if more clearance is
needed).
E. Install a carburetor gasket on the
carburetor mounting surface.
F. Test fit the carburetor in the enclosure and
bend the throttle arm if it contacts any part
of the enclosure from idle to wide open
throttle positions. Remove carburetor.
G. Install a vacuum cap over the PCV barb
fitting (if equipped) on the base plate of the
carburetor and secure with a small tie-wrap
or clamp. Attach short lengths of hose to
any necessary remaining vacuum sources
on the base plate of the carburetor. These
hoses will later be connected to a bulkhead
fitting and run from there to the necessary
accessory.
H. Install the carburetor and secure with four
5/16” nuts and washers.
Note: Due to the many possible
configurations of intake
manifolds (with regard to
carburetor flange height), if hood
interference is a problem, a lower
profile intake manifold may be
required. Factory 4-barrel intake
manifolds as well as the
Edelbrock “Performer” have been
verified to fit. The Edelbrock
“Performer RPM” intake is too
tall to work on a 1965 GTO with
carburetor enclosure.