Gm Applications; Installation - Holley 0-80508S Installation, Tuning, And Adjustment Manual

4. Install the transmission kickdown spring between the transmission kickdown lever and spring perch (Figure 2).

GM APPLICATIONS

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.
1. Remove the throttle cable ball and automatic transmission kickdown stud (if any) from the original carburetor, and mount these in
similar locations on the Holley® throttle lever. If the original throttle cable is too large, a new throttle ball or stud is needed (Holley®
P/N 20-2 or 20-38).

INSTALLATION:

1. Install the carburetor-mounting studs (not provided) in the proper location on the intake manifold carburetor flange.
2. Place the new carburetor flange gasket, provided with the carburetor, in the proper position on the intake manifold.
3. Place the carburetor on top of the flange gasket on the manifold. Install the hold down nuts and snug down progressively in a
"crisscross" pattern (60-80 in./lbs.), as shown in Figure 4.
WARNING: Overtightening may result in a warped or cracked carburetor throttle body.
4. Before connecting the linkage, operate the throttle lever to assure the correct travel (no sticking or binding), by opening to wide-
open throttle and back to closed throttle several times. Correct any sticking or binding conditions before proceeding.
WARNING: Any sticking, binding, or other interference in the throttle linkage could result in uncontrolled engine speed. This
could result in engine damage or personal injury.
Figure 3—Ford applications
Figure 4—Carburetor hold-down nut torque sequence
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