Introduction; Removal - Holley 0-80508S Installation, Tuning, And Adjustment Manual

INTRODUCTION:

CONGRATULATIONS on your purchase of a Holley® carburetor! We feel that you have purchased the finest performance carburetor
manufactured today. Should you need information or parts assistance, please contact our Technical Service Department at 1-270-781-
9741 or 1-866-GOHOLLEY, Monday through Friday, 7 a.m. to 5 p.m. CST. Please have the part number of the product you purchased
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on hand when you call
To preserve warranty, these instructions must be read and followed thoroughly before and during installation.
NOTE: The 0-80508S carburetor is a 50-state emission legal replacement carburetor for 1965-69 V-8 applications. In California,
those vehicles must have been originally equipped with a four-barrel carburetor.
WARNING: If you are using this carburetor with a GM overdrive transmission TH700R4 or a TH200R4, you must use a
transmission kickdown cable bracket (Holley® P/N 20-95) and stud (Holley® P/N 20-40). Otherwise, SEVERE
transmission damage WILL result. This carburetor is not designed to work with ANY other automatic overdrive
transmission.
These carburetors have been designed and calibrated as a universal replacement carburetor for passenger cars and light truck
applications equipped with V-6 and V-8 engines. It is designed for use on "square" flange intake manifolds. Carburetor adapters are
not recommended to adapt to "spread" bore intake manifolds, since adapters may have an adverse affect on cylinder-to-cylinder
distribution and ultimately, total engine performance. However, some manifolds may be universal. Please check with Holley's
Technical Service Department if you have any questions.

REMOVAL:

1. Remove the air cleaner, exercising care to carefully detach any vacuum lines from the air cleaner and marking them so they can be
reassembled to the air cleaner in the same manner.
2. Remove the existing carburetor by the following procedure:
A. Carefully disconnect the fuel line.
WARNING: Carefully protect the open end of the fuel lines, so that no foreign particles can enter. Wrap the end of the fuel
line with a clean lint-free cloth.
B. Disconnect and mark all vacuum lines and wiring (if any) to the carburetor.
C. Disconnect the PCV hose.
D. Disconnect the choke rod or heat tubes (if equipped).
E. Disconnect and remove the throttle linkage and automatic kickdown linkage. Save all retaining clips.
F. Unbolt and remove the carburetor from the manifold.
3. If the intake manifold is being changed at this time, install the new manifold according to the manifold's manufacturer's directions.
Since we are not familiar with all manifold instructions, Holley® cannot accept responsibility for their validity.
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